diff --git a/src/main/java/appeng/container/implementations/ContainerInscriber.java b/src/main/java/appeng/container/implementations/ContainerInscriber.java
index dd6341475..df3219ba1 100644
--- a/src/main/java/appeng/container/implementations/ContainerInscriber.java
+++ b/src/main/java/appeng/container/implementations/ContainerInscriber.java
@@ -135,13 +135,13 @@ public class ContainerInscriber extends ContainerUpgradeable implements IProgres
 			{
 				final boolean matchA = ( top.isEmpty() && !recipe.getTopOptional().isPresent() ) || ( Platform.itemComparisons().isSameItem( top,
 						recipe.getTopOptional().orElse( ItemStack.EMPTY ) ) ) && // and...
-						( bot.isEmpty() && !recipe.getBottomOptional().isPresent() ) || ( Platform.itemComparisons().isSameItem( bot,
-								recipe.getBottomOptional().orElse( ItemStack.EMPTY ) ) );
+						( ( bot.isEmpty() && !recipe.getBottomOptional().isPresent() ) || ( Platform.itemComparisons().isSameItem( bot,
+								recipe.getBottomOptional().orElse( ItemStack.EMPTY ) ) ) );
 
 				final boolean matchB = ( bot.isEmpty() && !recipe.getTopOptional().isPresent() ) || ( Platform.itemComparisons().isSameItem( bot,
 						recipe.getTopOptional().orElse( ItemStack.EMPTY ) ) ) && // and...
-						( top.isEmpty() && !recipe.getBottomOptional().isPresent() ) || ( Platform.itemComparisons().isSameItem( top,
-								recipe.getBottomOptional().orElse( ItemStack.EMPTY ) ) );
+						( ( top.isEmpty() && !recipe.getBottomOptional().isPresent() ) || ( Platform.itemComparisons().isSameItem( top,
+								recipe.getBottomOptional().orElse( ItemStack.EMPTY ) ) ) );
 
 				if( matchA || matchB )
 				{
diff --git a/src/main/java/appeng/parts/automation/PartUpgradeable.java b/src/main/java/appeng/parts/automation/PartUpgradeable.java
index aead02121..42a5776fc 100644
--- a/src/main/java/appeng/parts/automation/PartUpgradeable.java
+++ b/src/main/java/appeng/parts/automation/PartUpgradeable.java
@@ -43,7 +43,6 @@ public abstract class PartUpgradeable extends PartBasicState implements IAEAppEn
 	{
 		super( is );
 		this.upgrades = new StackUpgradeInventory( this.getItemStack(), this, this.getUpgradeSlots() );
-		this.upgrades.setMaxStackSize( 1 );
 		this.manager = new ConfigManager( this );
 	}
 
diff --git a/src/main/java/appeng/tile/inventory/AppEngInternalInventory.java b/src/main/java/appeng/tile/inventory/AppEngInternalInventory.java
index 7b3197f64..a25f72f60 100644
--- a/src/main/java/appeng/tile/inventory/AppEngInternalInventory.java
+++ b/src/main/java/appeng/tile/inventory/AppEngInternalInventory.java
@@ -19,6 +19,7 @@
 package appeng.tile.inventory;
 
 
+import java.util.Arrays;
 import java.util.Collections;
 import java.util.Iterator;
 
@@ -39,7 +40,7 @@ public class AppEngInternalInventory extends ItemStackHandler implements IIntern
 {
 	private boolean enableClientEvents = false;
 	private IAEAppEngInventory te;
-	private int maxStack;
+	private final int[] maxStack;
 	private InvOperation currentOp;
 	private ItemStack previousStack = ItemStack.EMPTY;
 	private IAEItemFilter filter;
@@ -49,7 +50,8 @@ public class AppEngInternalInventory extends ItemStackHandler implements IIntern
 		super( size );
 		this.setTileEntity( inventory );
 		this.setFilter( filter );
-		this.maxStack = maxStack;
+		this.maxStack = new int[size];
+		Arrays.fill( this.maxStack, maxStack );
 	}
 
 	public AppEngInternalInventory( final IAEAppEngInventory inventory, final int size, final int maxStack )
@@ -70,7 +72,7 @@ public class AppEngInternalInventory extends ItemStackHandler implements IIntern
 	@Override
 	public int getSlotLimit( int slot )
 	{
-		return this.maxStack;
+		return this.maxStack[slot];
 	}
 
 	@Override
@@ -135,9 +137,9 @@ public class AppEngInternalInventory extends ItemStackHandler implements IIntern
 		return Platform.isServer() || this.isEnableClientEvents();
 	}
 
-	public void setMaxStackSize( final int s )
+	public void setMaxStackSize( final int slot, final int size )
 	{
-		this.maxStack = s;
+		this.maxStack[slot] = size;
 	}
 
 	@Override
@@ -152,7 +154,7 @@ public class AppEngInternalInventory extends ItemStackHandler implements IIntern
 	@Override
 	public boolean isItemValidForSlot( int slot, ItemStack stack )
 	{
-		if( this.maxStack == 0 )
+		if( this.maxStack[slot] == 0 )
 		{
 			return false;
 		}
diff --git a/src/main/java/appeng/tile/misc/TileInscriber.java b/src/main/java/appeng/tile/misc/TileInscriber.java
index 994445910..2bd9fadbf 100644
--- a/src/main/java/appeng/tile/misc/TileInscriber.java
+++ b/src/main/java/appeng/tile/misc/TileInscriber.java
@@ -114,6 +114,8 @@ public class TileInscriber extends AENetworkPowerTile implements IGridTickable,
 		final ITileDefinition inscriberDefinition = AEApi.instance().definitions().blocks().inscriber();
 		this.upgrades = new DefinitionUpgradeInventory( inscriberDefinition, this, this.getUpgradeSlots() );
 
+		this.sideItemHandler.setMaxStackSize( 1, 64 );
+
 		final IAEItemFilter filter = new ItemHandlerFilter();
 		this.topItemHandlerExtern = new WrapperFilteredItemHandler( this.topItemHandler, filter );
 		this.bottomItemHandlerExtern = new WrapperFilteredItemHandler( this.bottomItemHandler, filter );
diff --git a/src/main/java/appeng/tile/qnb/TileQuantumBridge.java b/src/main/java/appeng/tile/qnb/TileQuantumBridge.java
index 04982b8e4..4887059ab 100644
--- a/src/main/java/appeng/tile/qnb/TileQuantumBridge.java
+++ b/src/main/java/appeng/tile/qnb/TileQuantumBridge.java
@@ -57,7 +57,7 @@ import appeng.util.inv.InvOperation;
 public class TileQuantumBridge extends AENetworkInvTile implements IAEMultiBlock, ITickable
 {
 	private final byte corner = 16;
-	private final AppEngInternalInventory internalInventory = new AppEngInternalInventory( this, 1 );
+	private final AppEngInternalInventory internalInventory = new AppEngInternalInventory( this, 1, 1 );
 	private final byte hasSingularity = 32;
 	private final byte powered = 64;
 
@@ -71,7 +71,6 @@ public class TileQuantumBridge extends AENetworkInvTile implements IAEMultiBlock
 		this.getProxy().setValidSides( EnumSet.noneOf( EnumFacing.class ) );
 		this.getProxy().setFlags( GridFlags.DENSE_CAPACITY );
 		this.getProxy().setIdlePowerUsage( 22 );
-		this.internalInventory.setMaxStackSize( 1 );
 	}
 
 	@Override