diff --git a/src/main/java/com/darkona/adventurebackpack/AdventureBackpack.java b/src/main/java/com/darkona/adventurebackpack/AdventureBackpack.java
index 26f753a6..7c8e0d90 100644
--- a/src/main/java/com/darkona/adventurebackpack/AdventureBackpack.java
+++ b/src/main/java/com/darkona/adventurebackpack/AdventureBackpack.java
@@ -1,11 +1,8 @@
 package com.darkona.adventurebackpack;
 
-import net.minecraft.launchwrapper.Launch;
 import net.minecraftforge.common.MinecraftForge;
 import cpw.mods.fml.common.FMLCommonHandler;
-import cpw.mods.fml.common.Loader;
 import cpw.mods.fml.common.Mod;
-import cpw.mods.fml.common.ModContainer;
 import cpw.mods.fml.common.SidedProxy;
 import cpw.mods.fml.common.event.FMLInitializationEvent;
 import cpw.mods.fml.common.event.FMLPostInitializationEvent;
@@ -29,9 +26,9 @@
 import com.darkona.adventurebackpack.init.ModWorldGen;
 import com.darkona.adventurebackpack.proxy.IProxy;
 import com.darkona.adventurebackpack.reference.GeneralReference;
+import com.darkona.adventurebackpack.reference.LoadedMods;
 import com.darkona.adventurebackpack.reference.ModInfo;
 import com.darkona.adventurebackpack.reference.WailaTileAdventureBackpack;
-import com.darkona.adventurebackpack.util.LogHelper;
 
 /**
  * Created on 10/10/2014
@@ -88,37 +85,11 @@ public void init(FMLInitializationEvent event)
     @Mod.EventHandler
     public void postInit(FMLPostInitializationEvent event)
     {
-        if ((Boolean) Launch.blackboard.get("fml.deobfuscatedEnvironment"))
-        {
-            ConfigHandler.IS_DEVENV = true;
-            LogHelper.info("Dev environment detected. All hail the creator");
-        }
-
-        ConfigHandler.IS_BUILDCRAFT = registerMod("BuildCraft|Core");
-        ConfigHandler.IS_ENDERIO = registerMod("EnderIO");
-        ConfigHandler.IS_GREGTECH = registerMod("gregtech");
-        ConfigHandler.IS_TCONSTRUCT = registerMod("TConstruct");
-        ConfigHandler.IS_THAUMCRAFT = registerMod("Thaumcraft");
-
+        LoadedMods.init();
         GeneralReference.init();
 
         //ConditionalFluidEffect.init();
         //ModItems.conditionalInit();
         //ModRecipes.conditionalInit();
     }
-
-    private static boolean registerMod(String modID)
-    {
-        if (!Loader.isModLoaded(modID))
-            return false;
-
-        String modName = modID;
-        for (ModContainer mod : Loader.instance().getModList())
-        {
-            if (mod.getModId().equals(modID))
-                modName = mod.getName();
-        }
-        LogHelper.info(modName + " is present. Acting accordingly");
-        return true;
-    }
 }
diff --git a/src/main/java/com/darkona/adventurebackpack/block/TileAdventureBackpack.java b/src/main/java/com/darkona/adventurebackpack/block/TileAdventureBackpack.java
index f60168a1..837b9200 100644
--- a/src/main/java/com/darkona/adventurebackpack/block/TileAdventureBackpack.java
+++ b/src/main/java/com/darkona/adventurebackpack/block/TileAdventureBackpack.java
@@ -119,6 +119,7 @@ public boolean deploySleepingBag(EntityPlayer player, World world, int meta, int
             sby = cY;
             sbz = cZ;
             sbdir = meta;
+            world.markBlockForUpdate(this.xCoord, this.yCoord, this.zCoord);
         }
         return sleepingBagDeployed;
     }
diff --git a/src/main/java/com/darkona/adventurebackpack/client/gui/GuiAdvBackpack.java b/src/main/java/com/darkona/adventurebackpack/client/gui/GuiAdvBackpack.java
index f1d24d44..f0989d61 100644
--- a/src/main/java/com/darkona/adventurebackpack/client/gui/GuiAdvBackpack.java
+++ b/src/main/java/com/darkona/adventurebackpack/client/gui/GuiAdvBackpack.java
@@ -21,6 +21,7 @@
 import com.darkona.adventurebackpack.inventory.InventoryBackpack;
 import com.darkona.adventurebackpack.network.PlayerActionPacket;
 import com.darkona.adventurebackpack.network.SleepingBagPacket;
+import com.darkona.adventurebackpack.reference.LoadedMods;
 import com.darkona.adventurebackpack.util.Resources;
 import com.darkona.adventurebackpack.util.TinkersUtils;
 
@@ -33,7 +34,6 @@
 public class GuiAdvBackpack extends GuiWithTanks
 {
     private static final ResourceLocation TEXTURE = Resources.guiTextures("guiBackpackNew");
-    private static final ResourceLocation TINKERS_ICONS = TinkersUtils.getTinkersIcons();
     private static final int TINKERS_SLOT = 38; //ContainerBackpack.CRAFT_MATRIX_EMULATION[4]
 
     private static GuiImageButtonNormal bedButton = new GuiImageButtonNormal(5, 91, 18, 18);
@@ -110,11 +110,11 @@ else if (source == Source.HOLDING)
                 drawHoveringText(tankRight.getTankTooltip(), mouseX, mouseY, fontRendererObj);
         }
 
-        if (ConfigHandler.IS_TCONSTRUCT && ConfigHandler.tinkerToolsMaintenance)
+        if (LoadedMods.TCONSTRUCT && ConfigHandler.tinkerToolsMaintenance)
         {
             if (inventory.getStackInSlot(TINKERS_SLOT) == null)
             {
-                this.mc.getTextureManager().bindTexture(TINKERS_ICONS);
+                this.mc.getTextureManager().bindTexture(TinkersUtils.GUI_ICONS);
                 this.drawTexturedModalRect(this.guiLeft + 169, this.guiTop + 77, 0, 233, 18, 18);
             }
         }
diff --git a/src/main/java/com/darkona/adventurebackpack/client/gui/GuiOverlay.java b/src/main/java/com/darkona/adventurebackpack/client/gui/GuiOverlay.java
index 43203703..198b66ea 100644
--- a/src/main/java/com/darkona/adventurebackpack/client/gui/GuiOverlay.java
+++ b/src/main/java/com/darkona/adventurebackpack/client/gui/GuiOverlay.java
@@ -33,6 +33,7 @@
 import com.darkona.adventurebackpack.config.ConfigHandler;
 import com.darkona.adventurebackpack.inventory.IInventoryTanks;
 import com.darkona.adventurebackpack.item.ItemHose;
+import com.darkona.adventurebackpack.reference.LoadedMods;
 import com.darkona.adventurebackpack.reference.ModInfo;
 import com.darkona.adventurebackpack.reference.ToolHandler;
 import com.darkona.adventurebackpack.util.GregtechUtils;
@@ -81,6 +82,7 @@ public void onRenderExperienceBar(RenderGameOverlayEvent.Post event)
         if (event.type != RenderGameOverlayEvent.ElementType.EXPERIENCE)
             return;
 
+        EntityPlayer player = mc.thePlayer;
         ScaledResolution resolution = new ScaledResolution(this.mc, this.mc.displayWidth, this.mc.displayHeight);
         screenWidth = resolution.getScaledWidth();
         screenHeight = resolution.getScaledHeight();
@@ -107,6 +109,14 @@ public void onRenderExperienceBar(RenderGameOverlayEvent.Post event)
                        ? ConfigHandler.statusOverlayIndentV
                        : screenHeight - BUFF_ICON_SIZE - ConfigHandler.statusOverlayIndentV;
 
+            if (LoadedMods.THAUMCRAFT
+                    && ConfigHandler.statusOverlayThaumcraft && ConfigHandler.statusOverlayLeft
+                    && ConfigHandler.statusOverlayTop == !ThaumcraftUtils.DIAL_BOTTOM
+                    && ThaumcraftUtils.isTool(player.inventory.getCurrentItem()))
+            {
+                xPos += 50; // do not overlap thaumcraft GUI
+            }
+
             Collection activePotionEffects = this.mc.thePlayer.getActivePotionEffects();
             if (!activePotionEffects.isEmpty())
             {
@@ -119,24 +129,16 @@ public void onRenderExperienceBar(RenderGameOverlayEvent.Post event)
                     PotionEffect potionEffect = (PotionEffect) activeEffect.next();
                     Potion potion = Potion.potionTypes[potionEffect.getPotionID()];
 
-                    try
-                    {
-                        // yes potion should not be null here, but it sometimes does. let the vanilla crash itself, no need to report this to us
-                        if (potion != null && potion.hasStatusIcon())
-                        {
-                            int iconIndex = potion.getStatusIconIndex();
-                            this.drawTexturedModalRect(
-                                    xPos, yPos,
-                                    BUFF_ICON_BASE_U_OFFSET + iconIndex % BUFF_ICONS_PER_ROW * BUFF_ICON_SIZE,
-                                    BUFF_ICON_BASE_V_OFFSET + iconIndex / BUFF_ICONS_PER_ROW * BUFF_ICON_SIZE,
-                                    BUFF_ICON_SIZE, BUFF_ICON_SIZE);
-                        }
-                    }
-                    catch (NullPointerException npe)
+                    // yes potion should not be null here, but it sometimes does
+                    // let the vanilla crash itself, no need to report this to us
+                    if (potion != null && potion.hasStatusIcon())
                     {
-                        String msg = "Weird NPE is caught: activePotionEffects: " + activePotionEffects
-                                + "; potionEffect: " + potionEffect + "; potion: " + potion;
-                        throw new NullPointerException(msg);
+                        int iconIndex = potion.getStatusIconIndex();
+                        this.drawTexturedModalRect(
+                                xPos, yPos,
+                                BUFF_ICON_BASE_U_OFFSET + iconIndex % BUFF_ICONS_PER_ROW * BUFF_ICON_SIZE,
+                                BUFF_ICON_BASE_V_OFFSET + iconIndex / BUFF_ICONS_PER_ROW * BUFF_ICON_SIZE,
+                                BUFF_ICON_SIZE, BUFF_ICON_SIZE);
                     }
                 }
             }
@@ -144,7 +146,6 @@ public void onRenderExperienceBar(RenderGameOverlayEvent.Post event)
 
         if (ConfigHandler.tanksOverlay)
         {
-            EntityPlayer player = mc.thePlayer;
             if (Wearing.isWearingWearable(player))
             {
                 IInventoryTanks inv = Wearing.getWearingWearableInv(player);
diff --git a/src/main/java/com/darkona/adventurebackpack/config/ConfigHandler.java b/src/main/java/com/darkona/adventurebackpack/config/ConfigHandler.java
index e4bec2b1..bb5b84b1 100644
--- a/src/main/java/com/darkona/adventurebackpack/config/ConfigHandler.java
+++ b/src/main/java/com/darkona/adventurebackpack/config/ConfigHandler.java
@@ -17,13 +17,6 @@ public class ConfigHandler
 {
     public static Configuration config;
 
-    public static boolean IS_DEVENV = false;
-    public static boolean IS_BUILDCRAFT = false;
-    public static boolean IS_ENDERIO = false;
-    public static boolean IS_GREGTECH = false;
-    public static boolean IS_TCONSTRUCT = false;
-    public static boolean IS_THAUMCRAFT = false;
-
     public static boolean allowSoulBound = true;
     public static boolean backpackDeathPlace = true;
     public static boolean backpackAbilities = true;
@@ -46,6 +39,7 @@ public class ConfigHandler
     public static boolean statusOverlayTop = true;
     public static int statusOverlayIndentH = 2;
     public static int statusOverlayIndentV = 2;
+    public static boolean statusOverlayThaumcraft = true;
 
     public static boolean tanksOverlay = true;
     public static boolean tanksOverlayRight = true;
@@ -134,6 +128,7 @@ private static void loadConfiguration()
         statusOverlayTop = config.getBoolean("Stick To Top", "graphics.status", true, "Stick to top?");
         statusOverlayIndentH = config.getInt("Indent Horizontal", "graphics.status", 2, 0, 1000, "Horizontal indent from the window border");
         statusOverlayIndentV = config.getInt("Indent Vertical", "graphics.status", 2, 0, 500, "Vertical indent from the window border");
+        statusOverlayThaumcraft = config.getBoolean("Respect Thaumcraft", "graphics.status", true, "Take into account Thaumcraft wands GUI and do not overlap it");
 
         // Graphics.Tanks
         tanksOverlay = config.getBoolean("Enable Overlay", "graphics.tanks", true, "Show the different wearable overlays on screen?");
diff --git a/src/main/java/com/darkona/adventurebackpack/init/ConditionalFluidEffect.java b/src/main/java/com/darkona/adventurebackpack/init/ConditionalFluidEffect.java
index ad32cb24..8ad5fb90 100644
--- a/src/main/java/com/darkona/adventurebackpack/init/ConditionalFluidEffect.java
+++ b/src/main/java/com/darkona/adventurebackpack/init/ConditionalFluidEffect.java
@@ -1,8 +1,8 @@
 package com.darkona.adventurebackpack.init;
 
-import com.darkona.adventurebackpack.config.ConfigHandler;
 import com.darkona.adventurebackpack.fluids.effects.FuelEffect;
 import com.darkona.adventurebackpack.fluids.effects.OilEffect;
+import com.darkona.adventurebackpack.reference.LoadedMods;
 import adventurebackpack.api.FluidEffect;
 
 /**
@@ -17,7 +17,7 @@ public class ConditionalFluidEffect
 
     public static void init()
     {
-        if (ConfigHandler.IS_BUILDCRAFT)
+        if (LoadedMods.BUILDCRAFT)
         {
             oilEffect = new OilEffect();
             fuelEffect = new FuelEffect();
diff --git a/src/main/java/com/darkona/adventurebackpack/init/ModItems.java b/src/main/java/com/darkona/adventurebackpack/init/ModItems.java
index 7ca8c2c1..ccdca0aa 100644
--- a/src/main/java/com/darkona/adventurebackpack/init/ModItems.java
+++ b/src/main/java/com/darkona/adventurebackpack/init/ModItems.java
@@ -55,12 +55,12 @@ public static void init()
 
     /*public static void conditionalInit()
     {
-        if (ConfigHandler.IS_BUILDCRAFT)
+        if (LoadedMods.BUILDCRAFT)
         {
             GameRegistry.registerItem(copterPack, "copterPack");
         }
 
-        if (ConfigHandler.IS_RAILCRAFT)
+        if (LoadedMods.RAILCRAFT)
         {
             GameRegistry.registerItem(steamJetpack, "steamJetpack");
         }
diff --git a/src/main/java/com/darkona/adventurebackpack/init/ModRecipes.java b/src/main/java/com/darkona/adventurebackpack/init/ModRecipes.java
index 8803a135..0156e02e 100644
--- a/src/main/java/com/darkona/adventurebackpack/init/ModRecipes.java
+++ b/src/main/java/com/darkona/adventurebackpack/init/ModRecipes.java
@@ -286,7 +286,7 @@ public static void init()
 
     /*public static void conditionalInit()
     {
-        if(ConfigHandler.IS_BUILDCRAFT)
+        if (LoadedMods.BUILDCRAFT)
         {
 
         }
diff --git a/src/main/java/com/darkona/adventurebackpack/inventory/ContainerBackpack.java b/src/main/java/com/darkona/adventurebackpack/inventory/ContainerBackpack.java
index dbd696c4..0fef433d 100644
--- a/src/main/java/com/darkona/adventurebackpack/inventory/ContainerBackpack.java
+++ b/src/main/java/com/darkona/adventurebackpack/inventory/ContainerBackpack.java
@@ -1,9 +1,11 @@
 package com.darkona.adventurebackpack.inventory;
 
 import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.entity.player.EntityPlayerMP;
 import net.minecraft.entity.player.InventoryPlayer;
 import net.minecraft.inventory.IInventory;
 import net.minecraft.inventory.InventoryCraftResult;
+import net.minecraft.inventory.Slot;
 import net.minecraft.item.ItemStack;
 import net.minecraft.item.crafting.CraftingManager;
 import net.minecraftforge.fluids.FluidTank;
@@ -37,6 +39,7 @@ public class ContainerBackpack extends ContainerAdventureBackpack
     private static final int BUCKET_LEFT = TOOL_END + 1;
     private static final int BUCKET_RIGHT = BUCKET_LEFT + 2;
     private static final int MATRIX_DIMENSION = 3;
+    private static final int CRAFT_RESULT = BUCKET_RIGHT + 2 + (MATRIX_DIMENSION * MATRIX_DIMENSION);
     private static final int[] CRAFT_MATRIX_EMULATION = findCraftMatrixEmulationIDs();
 
     private InventoryCraftingBackpack craftMatrix = new InventoryCraftingBackpack(this, MATRIX_DIMENSION, MATRIX_DIMENSION);
@@ -96,7 +99,7 @@ private void makeSlots(InventoryPlayer invPlayer)
 
         startX = 215;
         startY = -2500;
-        //startY = ConfigHandler.IS_DEVENV ? 125 : -2500;
+        //startY = LoadedMods.DEV_ENV ? 125 : -2500;
         for (int row = 0; row < MATRIX_DIMENSION; row++) // craftMatrix, usually 9 slots, [90-98]
         {
             for (int col = 0; col < MATRIX_DIMENSION; col++)
@@ -110,6 +113,24 @@ private void makeSlots(InventoryPlayer invPlayer)
         syncCraftMatrixToInventory();
     }
 
+    @Override
+    public void detectAndSendChanges()
+    {
+        ItemStack stackA = ((Slot) inventorySlots.get(CRAFT_RESULT)).getStack();
+        ItemStack stackB = (ItemStack) inventoryItemStacks.get(CRAFT_RESULT);
+
+        if (!ItemStack.areItemStacksEqual(stackB, stackA))
+        {
+            stackB = stackA == null ? null : stackA.copy();
+            inventoryItemStacks.set(CRAFT_RESULT, stackB);
+
+            if (player instanceof EntityPlayerMP)
+                ((EntityPlayerMP) player).sendContainerAndContentsToPlayer(this, this.getInventory());
+        }
+
+        super.detectAndSendChanges();
+    }
+
     @Override
     protected boolean detectChanges()
     {
@@ -268,7 +289,7 @@ protected void dropContentOnClose()
     @Override
     public void onCraftMatrixChanged(IInventory inventory)
     {
-        if (ConfigHandler.tinkerToolsMaintenance && TinkersUtils.isTool(craftMatrix.getStackInSlot(4)))
+        if (ConfigHandler.tinkerToolsMaintenance && TinkersUtils.isToolOrWeapon(craftMatrix.getStackInSlot(4)))
         {
             craftResult.setInventorySlotContents(0, TinkersUtils.getTinkersRecipe(craftMatrix));
             return;
diff --git a/src/main/java/com/darkona/adventurebackpack/inventory/IAsynchronousInventory.java b/src/main/java/com/darkona/adventurebackpack/inventory/IAsynchronousInventory.java
index 8a00dd2d..1ac1abdc 100644
--- a/src/main/java/com/darkona/adventurebackpack/inventory/IAsynchronousInventory.java
+++ b/src/main/java/com/darkona/adventurebackpack/inventory/IAsynchronousInventory.java
@@ -10,7 +10,7 @@
  */
 public interface IAsynchronousInventory extends IInventory
 {
-    void setInventorySlotContentsNoSave(int slot, ItemStack stack);
+    void setInventorySlotContentsNoSave(int slot, ItemStack stack); //TODO rework realisations, see InventoryBackpack
 
-    ItemStack decrStackSizeNoSave(int slot, int amount);
+    ItemStack decrStackSizeNoSave(int slot, int amount); //TODO whats the point and diff with decrStackSize?
 }
diff --git a/src/main/java/com/darkona/adventurebackpack/inventory/InventoryBackpack.java b/src/main/java/com/darkona/adventurebackpack/inventory/InventoryBackpack.java
index ce0fefee..e5a60edd 100644
--- a/src/main/java/com/darkona/adventurebackpack/inventory/InventoryBackpack.java
+++ b/src/main/java/com/darkona/adventurebackpack/inventory/InventoryBackpack.java
@@ -210,7 +210,7 @@ public void setInventorySlotContentsNoSave(int slot, ItemStack stack)
             if (stack.stackSize > this.getInventoryStackLimit())
                 stack.stackSize = this.getInventoryStackLimit();
 
-            if(stack.stackSize == 0)
+            if (stack.stackSize == 0)
                 stack = null;
         }
 
diff --git a/src/main/java/com/darkona/adventurebackpack/inventory/SlotTool.java b/src/main/java/com/darkona/adventurebackpack/inventory/SlotTool.java
index dfa13dd2..fdd65d68 100644
--- a/src/main/java/com/darkona/adventurebackpack/inventory/SlotTool.java
+++ b/src/main/java/com/darkona/adventurebackpack/inventory/SlotTool.java
@@ -56,7 +56,10 @@ public static boolean isValidTool(ItemStack stack)
 
         // GregTech
         if (GregtechUtils.isTool(itemName))
-            return !(stack.getItemDamage() == 0 || stack.getItemDamage() > 169); // 0 = sword, 170 = turbines
+        {
+            int meta = stack.getItemDamage();
+            return !(meta == 0 || meta == 24 || meta > 169); // 0 = sword, 24 = mortar, 170+ = turbines
+        }
         if (itemName.startsWith("gt.metaitem")) return false; // charged baterries and such
 
         // Tinkers Construct
diff --git a/src/main/java/com/darkona/adventurebackpack/reference/BackpackTypes.java b/src/main/java/com/darkona/adventurebackpack/reference/BackpackTypes.java
index 797f8a6e..1a67ffb6 100644
--- a/src/main/java/com/darkona/adventurebackpack/reference/BackpackTypes.java
+++ b/src/main/java/com/darkona/adventurebackpack/reference/BackpackTypes.java
@@ -1,5 +1,6 @@
 package com.darkona.adventurebackpack.reference;
 
+import java.util.Arrays;
 import java.util.EnumSet;
 
 import com.google.common.collect.BiMap;
@@ -7,6 +8,7 @@
 import com.google.common.collect.ImmutableBiMap;
 import com.google.common.collect.ImmutableSet;
 import com.google.common.collect.Sets;
+import org.apache.commons.lang3.StringUtils;
 import org.apache.commons.lang3.Validate;
 import org.apache.commons.lang3.text.WordUtils;
 
@@ -121,24 +123,20 @@ public enum BackpackTypes
 
     private final byte meta;
     private final String skinName;
-    private final Props[] props;
+    private final ImmutableSet<Props> props;
 
     BackpackTypes(int meta, String skin, Props... props)
     {
         Validate.inclusiveBetween(0, (int) Byte.MAX_VALUE, meta, "wrong meta value: %s (%s)", meta, this);
 
         this.meta = (byte) meta;
-        this.props = props;
-        this.skinName = skin;
+        this.skinName = skin.isEmpty() ? generateSkinName() : skin;
+        this.props = Sets.immutableEnumSet((Arrays.asList(props)));
     }
 
     BackpackTypes(int meta, Props... props)
     {
-        Validate.inclusiveBetween(0, (int) Byte.MAX_VALUE, meta, "wrong meta value: %s (%s)", meta, this);
-
-        this.meta = (byte) meta;
-        this.props = props;
-        this.skinName = generateSkinName();
+        this(meta, StringUtils.EMPTY, props);
     }
 
     private String generateSkinName()
@@ -259,12 +257,12 @@ public static boolean isSpecial(BackpackTypes type)
 
     public static boolean hasProperty(BackpackTypes type, Props prop)
     {
-        for (Props p : type.props)
-        {
-            if (p == prop)
-                return true;
-        }
-        return false;
+        return type.props.contains(prop);
+    }
+
+    public static boolean hasProperties(BackpackTypes type, ImmutableSet<Props> props)
+    {
+        return type.props.containsAll(props);
     }
 
     public enum Props
@@ -276,6 +274,8 @@ public enum Props
         //HOLIDAY,
         //OTHER_ABILITY, // creeper or skeleton etc
         ;
+
+        public static final ImmutableSet<Props> POTION_EFFECT = Sets.immutableEnumSet(SPECIAL, REMOVAL);
     }
 
     // ---
diff --git a/src/main/java/com/darkona/adventurebackpack/reference/GeneralReference.java b/src/main/java/com/darkona/adventurebackpack/reference/GeneralReference.java
index 9ad286f4..5daeb751 100644
--- a/src/main/java/com/darkona/adventurebackpack/reference/GeneralReference.java
+++ b/src/main/java/com/darkona/adventurebackpack/reference/GeneralReference.java
@@ -31,7 +31,7 @@ public static void init()
         parseLiquidFuelsConfig();
         parseDimensionBlacklistConfig();
 
-        if (ConfigHandler.IS_DEVENV)
+        if (LoadedMods.DEV_ENV)
             liquidFuels.put("holywater", 0.0f); // shhh.. you did not see anything. hallelujah!
     }
 
diff --git a/src/main/java/com/darkona/adventurebackpack/reference/LoadedMods.java b/src/main/java/com/darkona/adventurebackpack/reference/LoadedMods.java
new file mode 100644
index 00000000..d4985da4
--- /dev/null
+++ b/src/main/java/com/darkona/adventurebackpack/reference/LoadedMods.java
@@ -0,0 +1,48 @@
+package com.darkona.adventurebackpack.reference;
+
+import net.minecraft.launchwrapper.Launch;
+import cpw.mods.fml.common.Loader;
+import cpw.mods.fml.common.ModContainer;
+
+import com.darkona.adventurebackpack.util.LogHelper;
+
+/**
+ * Created on 24.02.2018
+ *
+ * @author Ugachaga
+ */
+public final class LoadedMods
+{
+    public static final boolean DEV_ENV = (Boolean) Launch.blackboard.get("fml.deobfuscatedEnvironment");
+
+    public static final boolean BUILDCRAFT = registerMod("BuildCraft|Core");
+    public static final boolean ENDERIO = registerMod("EnderIO");
+    public static final boolean GREGTECH = registerMod("gregtech");
+    public static final boolean TCONSTRUCT = registerMod("TConstruct");
+    public static final boolean THAUMCRAFT = registerMod("Thaumcraft");
+
+    private LoadedMods() {}
+
+    public static void init()
+    {
+        if (DEV_ENV)
+        {
+            LogHelper.info("Dev environment detected. All hail the creator");
+        }
+    }
+
+    private static boolean registerMod(String modID)
+    {
+        if (!Loader.isModLoaded(modID))
+            return false;
+
+        String modName = modID;
+        for (ModContainer mod : Loader.instance().getModList())
+        {
+            if (mod.getModId().equals(modID))
+                modName = mod.getName();
+        }
+        LogHelper.info(modName + " is present. Acting accordingly");
+        return true;
+    }
+}
diff --git a/src/main/java/com/darkona/adventurebackpack/util/CoordsUtils.java b/src/main/java/com/darkona/adventurebackpack/util/CoordsUtils.java
index 65ee2ca0..02f1455c 100644
--- a/src/main/java/com/darkona/adventurebackpack/util/CoordsUtils.java
+++ b/src/main/java/com/darkona/adventurebackpack/util/CoordsUtils.java
@@ -274,11 +274,7 @@ public static boolean spawnSleepingBag(EntityPlayer player, World world, int met
                     ++cX;
                     break;
             }
-            if (world.setBlock(cX, cY, cZ, sleepingBag, meta + 8, 3))
-            {
-                world.markBlockForUpdate(cX, cY, cZ);
-                return true;
-            }
+            return world.setBlock(cX, cY, cZ, sleepingBag, meta + 8, 3);
         }
         return false;
     }
diff --git a/src/main/java/com/darkona/adventurebackpack/util/EnchUtils.java b/src/main/java/com/darkona/adventurebackpack/util/EnchUtils.java
index 87193cd0..fff885d0 100644
--- a/src/main/java/com/darkona/adventurebackpack/util/EnchUtils.java
+++ b/src/main/java/com/darkona/adventurebackpack/util/EnchUtils.java
@@ -7,60 +7,46 @@
 import net.minecraftforge.common.util.Constants.NBT;
 
 import com.darkona.adventurebackpack.config.ConfigHandler;
+import com.darkona.adventurebackpack.reference.LoadedMods;
 
 /**
- * Created by Ugachaga on 24.03.2017.
+ * Created on 24.03.2017
+ *
+ * @author Ugachaga
  */
-
-public class EnchUtils
+public final class EnchUtils
 {
-    static
-    {
-        setSoulBoundID();
-    }
-
     // -3 - disabled by config
     // -2 - EnderIO not found
     // -1 - enchantment not found
-    private static int soulBoundID;
+    private static final int SOUL_BOUND_ID = setSoulBoundID();
 
-    public static int getSoulBoundID()
-    {
-        return soulBoundID;
-    }
+    private EnchUtils() {}
 
-    private static void setSoulBoundID()
+    private static int setSoulBoundID()
     {
         if (!ConfigHandler.allowSoulBound)
-        {
-            soulBoundID = -3;
-            return;
-        }
-        if (!ConfigHandler.IS_ENDERIO)
-        {
-            soulBoundID = -2;
-            return;
-        }
+            return -3;
+
+        if (!LoadedMods.ENDERIO)
+            return -2;
+
         for (Enchantment ench : Enchantment.enchantmentsList)
-        {
             if (ench != null && ench.getName().equals("enchantment.enderio.soulBound"))
-            {
-                soulBoundID = ench.effectId;
-                return;
-            }
-        }
-        soulBoundID = -1;
+                return ench.effectId;
+
+        return -1;
     }
 
     public static boolean isSoulBounded(ItemStack stack)
     {
         NBTTagList stackEnch = stack.getEnchantmentTagList();
-        if (getSoulBoundID() >= 0 && stackEnch != null)
+        if (SOUL_BOUND_ID >= 0 && stackEnch != null)
         {
             for (int i = 0; i < stackEnch.tagCount(); i++)
             {
                 int id = stackEnch.getCompoundTagAt(i).getInteger("id");
-                if (id == getSoulBoundID())
+                if (id == SOUL_BOUND_ID)
                     return true;
             }
         }
@@ -69,7 +55,7 @@ public static boolean isSoulBounded(ItemStack stack)
 
     public static boolean isSoulBook(ItemStack book)
     {
-        if (getSoulBoundID() >= 0 && book.hasTagCompound())
+        if (SOUL_BOUND_ID >= 0 && book.hasTagCompound())
         {
             NBTTagCompound bookData = book.stackTagCompound;
             if (bookData.hasKey("StoredEnchantments"))
@@ -78,8 +64,7 @@ public static boolean isSoulBook(ItemStack book)
                 if (!bookEnch.getCompoundTagAt(1).getBoolean("id")) // only pure soulbook allowed
                 {
                     int id = bookEnch.getCompoundTagAt(0).getInteger("id");
-                    if (id == getSoulBoundID())
-                        return true;
+                    return id == SOUL_BOUND_ID;
                 }
             }
         }
diff --git a/src/main/java/com/darkona/adventurebackpack/util/GregtechUtils.java b/src/main/java/com/darkona/adventurebackpack/util/GregtechUtils.java
index 93bcb183..79dae2e6 100644
--- a/src/main/java/com/darkona/adventurebackpack/util/GregtechUtils.java
+++ b/src/main/java/com/darkona/adventurebackpack/util/GregtechUtils.java
@@ -1,75 +1,81 @@
 package com.darkona.adventurebackpack.util;
 
+import javax.annotation.Nonnull;
+
 import net.minecraft.item.ItemStack;
 import net.minecraftforge.client.IItemRenderer;
 
-import com.darkona.adventurebackpack.config.ConfigHandler;
+import com.darkona.adventurebackpack.reference.LoadedMods;
 
 /**
  * Created on 30.01.2018
  *
  * @author Ugachaga
  */
-public class GregtechUtils
+public final class GregtechUtils
 {
     private static final String CLASS_RENDERER = "gregtech.common.render.GT_MetaGenerated_Tool_Renderer";
-    private static final String METHOD_RENDERER = "renderItem";
-    private static final Object[] EMPTY_OBJECT = {};
 
     private static final String TOOLS_NAME = "gt.metatool.01";
-    private static final int[] ROTATED_TOOLS = {10, 14, 18, 22, 34, 150, 160};
+    private static final int[] ROTATED_45_TOOLS = {16, 26, 30, 130};
+    private static final int[] ROTATED_90_TOOLS = {10, 14, 18, 22, 34, 150, 160};
 
+    private static Class<?> toolRenderer;
     private static Object toolRendererInstance;
 
     private GregtechUtils() {}
 
     static
     {
-        if (ConfigHandler.IS_GREGTECH && Utils.inClient())
+        if (LoadedMods.GREGTECH)
+        {
+            createToolRendererInstance();
+        }
+    }
+
+    private static void createToolRendererInstance()
+    {
+        if (Utils.inClient())
         {
             try
             {
-                toolRendererInstance = Class.forName(CLASS_RENDERER).newInstance();
+                toolRenderer = Class.forName(CLASS_RENDERER);
+                toolRendererInstance = toolRenderer.newInstance();
             }
             catch (Exception e)
             {
-                LogHelper.error("Error getting instance of Gregtech: " + e);
+                LogHelper.error("Error getting instance of Gregtech Tools Renderer: " + e);
             }
         }
     }
 
-    public static boolean isTool(ItemStack stack)
+    public static boolean isTool(@Nonnull ItemStack stack)
     {
-        return ConfigHandler.IS_GREGTECH && stack.getItem().getUnlocalizedName().equals(TOOLS_NAME);
+        return LoadedMods.GREGTECH && stack.getItem().getUnlocalizedName().equals(TOOLS_NAME);
     }
 
     public static boolean isTool(String itemName)
     {
-        return ConfigHandler.IS_GREGTECH && itemName.equals(TOOLS_NAME);
+        return LoadedMods.GREGTECH && itemName.equals(TOOLS_NAME);
     }
 
     public static float getToolRotationAngle(ItemStack stack, boolean isLowerSlot)
     {
         int meta = stack.getItemDamage();
-        for (int rotatedTool : ROTATED_TOOLS)
-        {
-            if (meta == rotatedTool)
+
+        for (int rotated45 : ROTATED_45_TOOLS)
+            if (meta == rotated45)
+                return isLowerSlot ? 0F : 90F;
+
+        for (int rotated90 : ROTATED_90_TOOLS)
+            if (meta == rotated90)
                 return isLowerSlot ? 45F : 135F;
-        }
+
         return isLowerSlot ? -45F : 45F;
     }
 
     public static void renderTool(ItemStack stack, IItemRenderer.ItemRenderType renderType)
     {
-        try
-        {
-            Class.forName(CLASS_RENDERER)
-                    .getMethod(METHOD_RENDERER, IItemRenderer.ItemRenderType.class, ItemStack.class, Object[].class)
-                    .invoke(toolRendererInstance, renderType, stack, EMPTY_OBJECT);
-        }
-        catch (Exception e)
-        {
-            //e.printStackTrace();
-        }
+        ToolRenderHelper.render(stack, renderType, toolRenderer, toolRendererInstance);
     }
 }
diff --git a/src/main/java/com/darkona/adventurebackpack/util/ThaumcraftUtils.java b/src/main/java/com/darkona/adventurebackpack/util/ThaumcraftUtils.java
index 17eafb5d..f6d49d5a 100644
--- a/src/main/java/com/darkona/adventurebackpack/util/ThaumcraftUtils.java
+++ b/src/main/java/com/darkona/adventurebackpack/util/ThaumcraftUtils.java
@@ -3,48 +3,74 @@
 import net.minecraft.item.ItemStack;
 import net.minecraftforge.client.IItemRenderer;
 
-import com.darkona.adventurebackpack.config.ConfigHandler;
+import com.darkona.adventurebackpack.reference.LoadedMods;
 
 /**
  * Created on 06.02.2018
  *
  * @author Ugachaga
  */
-public class ThaumcraftUtils
+public final class ThaumcraftUtils
 {
-    private static final String CLASS_RENDERER = "thaumcraft.client.renderers.item.ItemWandRenderer";
-    private static final String METHOD_RENDERER = "renderItem";
-    private static final Object[] EMPTY_OBJECT = {};
+    public static final boolean DIAL_BOTTOM = setDialBottom();
 
+    private static final String CLASS_RENDERER = "thaumcraft.client.renderers.item.ItemWandRenderer";
+    private static final String CLASS_CONFIG = "thaumcraft.common.config.Config";
     private static final String CLASS_WANDS = "thaumcraft.common.items.wands.ItemWandCasting";
+    private static final String FIELD_DIAL_BOTTOM = "dialBottom";
 
+    private static Class<?> toolRenderer;
     private static Object toolRendererInstance;
 
     private ThaumcraftUtils() {}
 
     static
     {
-        if (ConfigHandler.IS_THAUMCRAFT && Utils.inClient())
+        if (LoadedMods.THAUMCRAFT)
+        {
+            createToolRendererInstance();
+        }
+    }
+
+    private static void createToolRendererInstance()
+    {
+        if (Utils.inClient())
         {
             try
             {
-                toolRendererInstance = Class.forName(CLASS_RENDERER).newInstance();
+                toolRenderer = Class.forName(CLASS_RENDERER);
+                toolRendererInstance = toolRenderer.newInstance();
             }
             catch (Exception e)
             {
-                LogHelper.error("Error getting Thaumcraft Wands Renderer instance: " + e);
+                LogHelper.error("Error getting instance of Thaumcraft Wands Renderer: " + e);
             }
         }
     }
 
+    private static boolean setDialBottom()
+    {
+        if (!LoadedMods.THAUMCRAFT || Utils.inServer())
+            return false;
+
+        try
+        {
+            return Class.forName(CLASS_CONFIG).getField(FIELD_DIAL_BOTTOM).getBoolean(null);
+        }
+        catch (ClassNotFoundException | NoSuchFieldException | IllegalAccessException e)
+        {
+            return false;
+        }
+    }
+
     public static boolean isTool(ItemStack stack)
     {
-        if (!ConfigHandler.IS_THAUMCRAFT || stack == null)
+        if (!LoadedMods.THAUMCRAFT || stack == null)
             return false;
 
         try
         {
-            return java.lang.Class.forName(CLASS_WANDS).isInstance(stack.getItem());
+            return Class.forName(CLASS_WANDS).isInstance(stack.getItem());
         }
         catch (ClassNotFoundException e)
         {
@@ -59,15 +85,6 @@ public static float getToolRotationAngle(ItemStack stack, boolean isLowerSlot)
 
     public static void renderTool(ItemStack stack, IItemRenderer.ItemRenderType renderType)
     {
-        try
-        {
-            Class.forName(CLASS_RENDERER)
-                    .getMethod(METHOD_RENDERER, IItemRenderer.ItemRenderType.class, ItemStack.class, Object[].class)
-                    .invoke(toolRendererInstance, renderType, stack, EMPTY_OBJECT);
-        }
-        catch (Exception e)
-        {
-            //e.printStackTrace();
-        }
+        ToolRenderHelper.render(stack, renderType, toolRenderer, toolRendererInstance);
     }
 }
diff --git a/src/main/java/com/darkona/adventurebackpack/util/TinkersUtils.java b/src/main/java/com/darkona/adventurebackpack/util/TinkersUtils.java
index 2065edcf..0fc174ec 100644
--- a/src/main/java/com/darkona/adventurebackpack/util/TinkersUtils.java
+++ b/src/main/java/com/darkona/adventurebackpack/util/TinkersUtils.java
@@ -1,5 +1,6 @@
 package com.darkona.adventurebackpack.util;
 
+import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 import java.util.UUID;
 
@@ -15,101 +16,126 @@
 import com.mojang.authlib.GameProfile;
 import cpw.mods.fml.common.FMLCommonHandler;
 
-import com.darkona.adventurebackpack.config.ConfigHandler;
+import com.darkona.adventurebackpack.reference.LoadedMods;
 
 /**
  * Created on 03.02.2018
  *
  * @author Ugachaga
  */
-public class TinkersUtils
+public final class TinkersUtils
 {
+    public static final ResourceLocation GUI_ICONS = new ResourceLocation("tinker", "textures/gui/icons.png");
+
     private static final String CLASS_CRAFTING_LOGIC = "tconstruct.tools.logic.CraftingStationLogic";
     private static final String CLASS_CRAFTING_STATION = "tconstruct.tools.inventory.CraftingStationContainer";
-    private static final String METHOD_ON_CRAFT_CHANGED = ConfigHandler.IS_DEVENV ? "onCraftMatrixChanged" : "func_75130_a";
+    private static final String METHOD_ON_CRAFT_CHANGED = LoadedMods.DEV_ENV ? "onCraftMatrixChanged" : "func_75130_a";
     private static final String FIELD_CRAFT_MATRIX = "craftMatrix";
     private static final String FIELD_CRAFT_RESULT = "craftResult";
 
     private static final String CLASS_RENDERER = "tconstruct.client.FlexibleToolRenderer";
-    private static final String METHOD_RENDERER = "renderItem";
-    private static final Object[] EMPTY_OBJECT = {};
 
-    private static final String PACKAGE_INFI_TOOLS = "tconstruct.items.tools";
+    private static final String PACKAGE_TCONSTRUCT = "tconstruct";
+    private static final String PACKAGE_TOOLS = "tconstruct.items.tools";
+    private static final String PACKAGE_AMMO = "tconstruct.weaponry.ammo"; // arrows and bolts
+    private static final String PACKAGE_WEAPONS = "tconstruct.weaponry.weapons"; // bows, crossbows, throwing weapons
 
     private static Class<?> craftingStation;
     private static Object craftingStationInstance;
+
+    private static Class<?> toolRenderer;
     private static Object toolRendererInstance;
 
     private TinkersUtils() {}
 
     static
     {
-        if (ConfigHandler.IS_TCONSTRUCT)
+        if (LoadedMods.TCONSTRUCT)
         {
-            getCraftingStationInstance();
-
-            if (Utils.inClient())
-            {
-                try
-                {
-                    toolRendererInstance = Class.forName(CLASS_RENDERER).newInstance();
-                }
-                catch (Exception e)
-                {
-                    LogHelper.error("Error getting Tinkers Tool Renderer instance: " + e);
-                }
-            }
+            createCraftingStationInstance();
+            createToolRendererInstance();
         }
     }
 
-    private static void getCraftingStationInstance()
+    private static void createCraftingStationInstance()
     {
         try
         {
             Class craftingLogic = Class.forName(CLASS_CRAFTING_LOGIC);
             Object craftingLogicInstance = craftingLogic.newInstance();
-            InventoryPlayer invPlayer;
-
-            if (Utils.inServer())
-            {
-                WorldServer world = FMLCommonHandler.instance().getMinecraftServerInstance().worldServers[0];
-                UUID fakeUuid = UUID.fromString("521e749d-2ac0-3459-af7a-160b4be5c62b");
-                GameProfile fakeProfile = new GameProfile(fakeUuid, "[Adventurer]");
-                invPlayer = new InventoryPlayer(new FakePlayer(world, fakeProfile));
-            }
-            else
-            {
-                invPlayer = Minecraft.getMinecraft().thePlayer.inventory;
-            }
+            InventoryPlayer invPlayer = getInventoryPlayer();
 
             craftingStation = Class.forName(CLASS_CRAFTING_STATION);
             craftingStationInstance = craftingStation
                     .getConstructor(InventoryPlayer.class, craftingLogic, int.class, int.class, int.class)
                     .newInstance(invPlayer, craftingLogicInstance, 0, 0, 0);
-
-            LogHelper.info("Tinkers Crafting Station instance created");
         }
         catch (Exception e)
         {
-            LogHelper.error("Error getting Tinkers Crafting Station instance: " + e);
-            //e.printStackTrace();
+            LogHelper.error("Error getting instance of Tinkers Crafting Station: " + e);
         }
     }
 
-    public static boolean isTool(ItemStack stack)
+    private static InventoryPlayer getInventoryPlayer()
     {
-        return ConfigHandler.IS_TCONSTRUCT
-                && stack != null && stack.getItem().getClass().getName().startsWith(PACKAGE_INFI_TOOLS);
+        InventoryPlayer invPlayer;
+        if (Utils.inServer())
+        {
+            WorldServer world = FMLCommonHandler.instance().getMinecraftServerInstance().worldServers[0];
+            UUID fakeUuid = UUID.fromString("521e749d-2ac0-3459-af7a-160b4be5c62b");
+            GameProfile fakeProfile = new GameProfile(fakeUuid, "[Adventurer]");
+            invPlayer = new InventoryPlayer(new FakePlayer(world, fakeProfile));
+        }
+        else
+        {
+            invPlayer = Minecraft.getMinecraft().thePlayer.inventory;
+        }
+        return invPlayer;
+    }
+
+    private static void createToolRendererInstance()
+    {
+        if (Utils.inClient())
+        {
+            try
+            {
+                toolRenderer = Class.forName(CLASS_RENDERER);
+                toolRendererInstance = toolRenderer.newInstance();
+            }
+            catch (Exception e)
+            {
+                LogHelper.error("Error getting instance of Tinkers Tool Renderer: " + e);
+            }
+        }
+    }
+
+    public static boolean isToolOrWeapon(@Nullable ItemStack stack)
+    {
+        if (stack == null)
+            return false;
+
+        String cn = stack.getItem().getClass().getName();
+        return cn.startsWith(PACKAGE_TCONSTRUCT)
+                && (cn.startsWith(PACKAGE_TOOLS) || cn.startsWith(PACKAGE_WEAPONS) || cn.startsWith(PACKAGE_AMMO));
+
+    }
+
+    public static boolean isTool(@Nonnull ItemStack stack)
+    {
+        return LoadedMods.TCONSTRUCT && stack.getItem().getClass().getName().startsWith(PACKAGE_TOOLS);
     }
 
     public static boolean isTool(String clazzName)
     {
-        return ConfigHandler.IS_TCONSTRUCT && clazzName.startsWith(PACKAGE_INFI_TOOLS);
+        return LoadedMods.TCONSTRUCT && clazzName.startsWith(PACKAGE_TOOLS);
     }
 
     @Nullable
     public static ItemStack getTinkersRecipe(InventoryCrafting craftMatrix)
     {
+        if (craftingStationInstance == null)
+            return null;
+
         try
         {
             craftingStation
@@ -139,20 +165,6 @@ public static float getToolRotationAngle(ItemStack stack, boolean isLowerSlot)
 
     public static void renderTool(ItemStack stack, IItemRenderer.ItemRenderType renderType)
     {
-        try
-        {
-            Class.forName(CLASS_RENDERER)
-                    .getMethod(METHOD_RENDERER, IItemRenderer.ItemRenderType.class, ItemStack.class, Object[].class)
-                    .invoke(toolRendererInstance, renderType, stack, EMPTY_OBJECT);
-        }
-        catch (Exception e)
-        {
-            //e.printStackTrace();
-        }
-    }
-
-    public static ResourceLocation getTinkersIcons()
-    {
-        return new ResourceLocation("tinker", "textures/gui/icons.png");
+        ToolRenderHelper.render(stack, renderType, toolRenderer, toolRendererInstance);
     }
 }
diff --git a/src/main/java/com/darkona/adventurebackpack/util/ToolRenderHelper.java b/src/main/java/com/darkona/adventurebackpack/util/ToolRenderHelper.java
new file mode 100644
index 00000000..4bcc22ee
--- /dev/null
+++ b/src/main/java/com/darkona/adventurebackpack/util/ToolRenderHelper.java
@@ -0,0 +1,32 @@
+package com.darkona.adventurebackpack.util;
+
+import net.minecraft.item.ItemStack;
+import net.minecraftforge.client.IItemRenderer.ItemRenderType;
+
+/**
+ * Created on 25.02.2018
+ *
+ * @author Ugachaga
+ */
+public final class ToolRenderHelper
+{
+    private static final String METHOD_RENDERER = "renderItem";
+    private static final Object[] EMPTY_OBJECT = {};
+
+    private ToolRenderHelper() {}
+
+    public static void render(ItemStack stack, ItemRenderType type, Class<?> renderer, Object rendererInstance)
+    {
+        if (rendererInstance == null)
+            return;
+
+        try
+        {
+            renderer
+                    .getMethod(METHOD_RENDERER, ItemRenderType.class, ItemStack.class, Object[].class)
+                    .invoke(rendererInstance, type, stack, EMPTY_OBJECT);
+        }
+        catch (Exception e)
+        { /*  */ }
+    }
+}
diff --git a/src/main/resources/META-INF/adventurebackpack_at.cfg b/src/main/resources/META-INF/adventurebackpack_at.cfg
index 4b3e57ad..a9371e12 100644
--- a/src/main/resources/META-INF/adventurebackpack_at.cfg
+++ b/src/main/resources/META-INF/adventurebackpack_at.cfg
@@ -1 +1 @@
-public net.minecraft.inventory.InventoryCrafting field_70466_a # stackList
\ No newline at end of file
+protected net.minecraft.inventory.InventoryCrafting field_70466_a # stackList
\ No newline at end of file