diff --git a/src/main/scala/li/cil/oc/common/recipe/ExtendedRecipe.scala b/src/main/scala/li/cil/oc/common/recipe/ExtendedRecipe.scala
index a459acd10..5d2a7541e 100644
--- a/src/main/scala/li/cil/oc/common/recipe/ExtendedRecipe.scala
+++ b/src/main/scala/li/cil/oc/common/recipe/ExtendedRecipe.scala
@@ -51,9 +51,8 @@ object ExtendedRecipe {
   def addNBTToResult(recipe: IRecipe, craftedStack: ItemStack, inventory: InventoryCrafting): ItemStack = {
     if (api.Items.get(craftedStack) == navigationUpgrade) {
       Option(api.Driver.driverFor(craftedStack)).foreach(driver =>
-        for (slot <- 0 until inventory.getSizeInventory) {
-          val stack = inventory.getStackInSlot(slot)
-          if (stack != null && stack.getItem == net.minecraft.init.Items.filled_map) {
+        for (stack <- getItems(inventory)) {
+          if (stack.getItem == net.minecraft.init.Items.filled_map) {
             // Store information of the map used for crafting in the result.
             val nbt = driver.dataTag(craftedStack)
             nbt.setNewCompoundTag(Settings.namespace + "map", stack.writeToNBT)
@@ -79,9 +78,8 @@ object ExtendedRecipe {
       if (recipe.getRecipeSize == 1) {
         // Formatting / loot to normal disk conversion, only keep coloring.
         val colorKey = Settings.namespace + "color"
-        for (slot <- 0 until inventory.getSizeInventory) {
-          val stack = inventory.getStackInSlot(slot)
-          if (stack != null && api.Items.get(stack) != null && (api.Items.get(stack) == floppy || api.Items.get(stack).name == "lootDisk") && stack.hasTagCompound) {
+        for (stack <- getItems(inventory)) {
+          if (api.Items.get(stack) != null && (api.Items.get(stack) == floppy || api.Items.get(stack).name == "lootDisk") && stack.hasTagCompound) {
             val oldData = stack.getTagCompound
             if (oldData.hasKey(colorKey) && oldData.getInteger(colorKey) != Color.dyes.indexOf("lightGray")) {
               nbt.setTag(colorKey, oldData.getTag(colorKey).copy())
@@ -92,10 +90,10 @@ object ExtendedRecipe {
           craftedStack.setTagCompound(null)
         }
       }
-      else {
-        for (slot <- 0 until inventory.getSizeInventory) {
-          val stack = inventory.getStackInSlot(slot)
-          if (stack != null && api.Items.get(stack) == floppy && stack.hasTagCompound) {
+      else if (getItems(inventory).forall(api.Items.get(_) == floppy)) {
+        // Copy operation.
+        for (stack <- getItems(inventory)) {
+          if (api.Items.get(stack) == floppy && stack.hasTagCompound) {
             val oldData = stack.getTagCompound
             for (oldTagName <- oldData.func_150296_c().map(_.asInstanceOf[String])) {
               nbt.setTag(oldTagName, oldData.getTag(oldTagName).copy())
@@ -111,7 +109,7 @@ object ExtendedRecipe {
       recipe.asInstanceOf[ExtendedShapelessOreRecipe].getInput.size == 2) {
       // First, copy old data.
       val data = new PrintData(craftedStack)
-      val inputs = (0 until inventory.getSizeInventory).map(inventory.getStackInSlot).filter(_ != null)
+      val inputs = getItems(inventory)
       for (stack <- inputs) {
         if (api.Items.get(stack) == print) {
           data.load(stack)
@@ -158,13 +156,12 @@ object ExtendedRecipe {
 
     // EEPROM copying.
     if (api.Items.get(craftedStack) == eeprom &&
-      api.Items.get(craftedStack) != luaBios &&
+      craftedStack.stackSize == 2 &&
       recipe.isInstanceOf[ExtendedShapelessOreRecipe] &&
       recipe.asInstanceOf[ExtendedShapelessOreRecipe].getInput != null &&
       recipe.asInstanceOf[ExtendedShapelessOreRecipe].getInput.size == 2) breakable {
-      for (slot <- 0 until inventory.getSizeInventory) {
-        val stack = inventory.getStackInSlot(slot)
-        if (stack != null && api.Items.get(stack) == eeprom && stack.hasTagCompound) {
+      for (stack <- getItems(inventory)) {
+        if (api.Items.get(stack) == eeprom && stack.hasTagCompound) {
           val copy = stack.getTagCompound.copy.asInstanceOf[NBTTagCompound]
           // Erase node address, just in case.
           copy.getCompoundTag(Settings.namespace + "data").getCompoundTag("node").removeTag("address")
@@ -183,10 +180,12 @@ object ExtendedRecipe {
     craftedStack
   }
 
+  private def getItems(inventory: InventoryCrafting) = (0 until inventory.getSizeInventory).map(inventory.getStackInSlot).filter(_ != null)
+
   private def recraft(craftedStack: ItemStack, inventory: InventoryCrafting, descriptor: ItemInfo, dataFactory: (ItemStack) => ItemDataWrapper) {
     if (api.Items.get(craftedStack) == descriptor) {
       // Find old Microcontroller.
-      (0 until inventory.getSizeInventory).map(inventory.getStackInSlot).find(api.Items.get(_) == descriptor) match {
+      getItems(inventory).find(api.Items.get(_) == descriptor) match {
         case Some(oldMcu) =>
           val data = dataFactory(oldMcu)
 
@@ -195,8 +194,7 @@ object ExtendedRecipe {
           data.components = data.components.diff(oldRom)
 
           // Insert new EEPROM.
-          for (slot <- 0 until inventory.getSizeInventory) {
-            val stack = inventory.getStackInSlot(slot)
+          for (stack <- getItems(inventory)) {
             if (api.Items.get(stack) == eeprom) {
               data.components :+= stack
             }
diff --git a/src/main/scala/li/cil/oc/common/recipe/NBTIgnoringShapedRecipe.scala b/src/main/scala/li/cil/oc/common/recipe/NBTIgnoringShapedRecipe.scala
new file mode 100644
index 000000000..906a9d119
--- /dev/null
+++ b/src/main/scala/li/cil/oc/common/recipe/NBTIgnoringShapedRecipe.scala
@@ -0,0 +1,8 @@
+package li.cil.oc.common.recipe
+
+import net.minecraft.item.ItemStack
+import net.minecraftforge.oredict.ShapedOreRecipe
+
+class NBTIgnoringShapedRecipe(result: ItemStack, recipe: AnyRef*) extends ShapedOreRecipe(result, recipe: _*) {
+
+}
diff --git a/src/main/scala/li/cil/oc/integration/gregtech/RecipeHandler.scala b/src/main/scala/li/cil/oc/integration/gregtech/RecipeHandler.scala
index 42027979b..8215877b3 100644
--- a/src/main/scala/li/cil/oc/integration/gregtech/RecipeHandler.scala
+++ b/src/main/scala/li/cil/oc/integration/gregtech/RecipeHandler.scala
@@ -7,7 +7,6 @@ import com.typesafe.config.ConfigValue
 import li.cil.oc.common.recipe.Recipes
 import li.cil.oc.common.recipe.Recipes.RecipeException
 import net.minecraft.item.ItemStack
-import net.minecraftforge.fluids.FluidStack
 import net.minecraftforge.oredict.OreDictionary
 
 import scala.collection.convert.WrapAsScala._
diff --git a/src/main/scala/li/cil/oc/integration/vanilla/RecipeHandler.scala b/src/main/scala/li/cil/oc/integration/vanilla/RecipeHandler.scala
index d544b6422..c5abe791b 100644
--- a/src/main/scala/li/cil/oc/integration/vanilla/RecipeHandler.scala
+++ b/src/main/scala/li/cil/oc/integration/vanilla/RecipeHandler.scala
@@ -43,7 +43,7 @@ object RecipeHandler {
       shape += pattern.toString
       input ++= ingredients
     }
-    if (input.size > 0 && output.stackSize > 0) {
+    if (input.nonEmpty && output.stackSize > 0) {
       GameRegistry.addRecipe(new ExtendedShapedOreRecipe(output, shape ++ input: _*))
     }
   }
@@ -55,7 +55,7 @@ object RecipeHandler {
     }
     output.stackSize = Recipes.tryGetCount(recipe)
 
-    if (input.size > 0 && output.stackSize > 0) {
+    if (input.nonEmpty && output.stackSize > 0) {
       GameRegistry.addRecipe(new ExtendedShapelessOreRecipe(output, input: _*))
     }
   }
diff --git a/src/main/scala/li/cil/oc/server/machine/Machine.scala b/src/main/scala/li/cil/oc/server/machine/Machine.scala
index c045c38b4..d4cff5c12 100644
--- a/src/main/scala/li/cil/oc/server/machine/Machine.scala
+++ b/src/main/scala/li/cil/oc/server/machine/Machine.scala
@@ -625,7 +625,7 @@ class Machine(val host: MachineHost) extends prefab.ManagedEnvironment with mach
   }
 
   private def processAddedComponents() {
-    if (addedComponents.size > 0) {
+    if (addedComponents.nonEmpty) {
       for (component <- addedComponents) {
         if (component.canBeSeenFrom(node)) {
           _components.synchronized(_components += component.address -> component.name)
@@ -684,7 +684,7 @@ class Machine(val host: MachineHost) extends prefab.ManagedEnvironment with mach
       else fs.load(SaveHandler.loadNBT(nbt, node.address + "_tmp"))
     })
 
-    if (state.size > 0 && isRunning && init()) try {
+    if (state.nonEmpty && isRunning && init()) try {
       architecture.load(nbt)
 
       signals ++= nbt.getTagList("signals", NBT.TAG_COMPOUND).map((signalNbt: NBTTagCompound) => {