diff --git a/src/main/java/gregtech/common/tileentities/machines/multi/GT_MetaTileEntity_OreDrillingPlantBase.java b/src/main/java/gregtech/common/tileentities/machines/multi/GT_MetaTileEntity_OreDrillingPlantBase.java
index 729a1337..f25d2d30 100644
--- a/src/main/java/gregtech/common/tileentities/machines/multi/GT_MetaTileEntity_OreDrillingPlantBase.java
+++ b/src/main/java/gregtech/common/tileentities/machines/multi/GT_MetaTileEntity_OreDrillingPlantBase.java
@@ -94,10 +94,12 @@ public abstract class GT_MetaTileEntity_OreDrillingPlantBase extends GT_MetaTile
     @Override
     public boolean checkRecipe(ItemStack aStack) {
         setElectricityStats();
+        int oldYHead = yHead;
         if (!checkPipesAndSetYHead() || !isEnergyEnough()) {
             stopMachine();
             return false;
         }
+        if (yHead != oldYHead) oreBlockPositions.clear();
         if (isPickingPipes) {
             if (tryPickPipe()) {
                 mOutputItems = new ItemStack[] {GT_Utility.copyAmount(1, miningPipe)};
@@ -286,7 +288,7 @@ public abstract class GT_MetaTileEntity_OreDrillingPlantBase extends GT_MetaTile
         if (yHead <= 0) return false;
         if (checkBlockAndMeta(xCenter, yHead - 1, zCenter, Blocks.bedrock, W)) return false;
 
-        if (!getBaseMetaTileEntity().getWorld().setBlock(xCenter, yHead - 1, zCenter, miningPipeTipBlock)) return false;
+        getBaseMetaTileEntity().getWorld().setBlock(xCenter, yHead - 1, zCenter, miningPipeTipBlock);
         if (yHead != yDrill) getBaseMetaTileEntity().getWorld().setBlock(xCenter, yHead, zCenter, miningPipeBlock);
 
         getBaseMetaTileEntity().decrStackSize(1, 1);
@@ -350,7 +352,6 @@ public abstract class GT_MetaTileEntity_OreDrillingPlantBase extends GT_MetaTile
         if (checkBlockAndMeta(xCenter, yHead, zCenter, miningPipeTipBlock, W) || ++yHead == yDrill) return true;
         //pipe column is broken - try fix
         getBaseMetaTileEntity().getWorld().setBlock(xCenter, yHead, zCenter, miningPipeTipBlock);
-        oreBlockPositions.clear();
         return true;
     }
 
diff --git a/src/main/java/gregtech/loaders/postload/GT_MachineRecipeLoader.java b/src/main/java/gregtech/loaders/postload/GT_MachineRecipeLoader.java
index 861d2e51..31c16d3e 100644
--- a/src/main/java/gregtech/loaders/postload/GT_MachineRecipeLoader.java
+++ b/src/main/java/gregtech/loaders/postload/GT_MachineRecipeLoader.java
@@ -1346,7 +1346,7 @@ if(Loader.isModLoaded("Railcraft")){
         GT_Values.RA.addAssemblerRecipe(GT_OreDictUnificator.get(OrePrefixes.plate, Materials.TungstenSteel, 6L), GT_OreDictUnificator.get(OrePrefixes.frameGt, Materials.TungstenSteel, 1L), ItemList.Casing_RobustTungstenSteel.get(2L, new Object[0]), 50, 16);
         GT_Values.RA.addAssemblerRecipe(GT_OreDictUnificator.get(OrePrefixes.plate, Materials.StainlessSteel, 6L), GT_OreDictUnificator.get(OrePrefixes.frameGt, Materials.StainlessSteel, 1L), ItemList.Casing_CleanStainlessSteel.get(2L, new Object[0]), 50, 16);
         GT_Values.RA.addAssemblerRecipe(GT_OreDictUnificator.get(OrePrefixes.plate, Materials.Titanium, 6L), GT_OreDictUnificator.get(OrePrefixes.frameGt, Materials.Titanium, 1L), ItemList.Casing_StableTitanium.get(2L, new Object[0]), 50, 16);
-        GT_Values.RA.addAssemblerRecipe(GT_OreDictUnificator.get(OrePrefixes.plate, Materials.Osmiridium, 6L), GT_OreDictUnificator.get(OrePrefixes.frameGt, Materials.Osmiridium, 1L), ItemList.Casing_StableTitanium.get(2L, new Object[0]), 50, 16);
+        GT_Values.RA.addAssemblerRecipe(GT_OreDictUnificator.get(OrePrefixes.plate, Materials.Osmiridium, 6L), GT_OreDictUnificator.get(OrePrefixes.frameGt, Materials.Osmiridium, 1L), ItemList.Casing_MiningOsmiridium.get(2L, new Object[0]), 50, 16);
         GT_Values.RA.addAssemblerRecipe(GT_OreDictUnificator.get(OrePrefixes.plate, Materials.TungstenSteel, 6L), ItemList.Casing_LuV.get(1L, new Object[0]), ItemList.Casing_Fusion.get(1L, new Object[0]), 50, 16);
         GT_Values.RA.addAssemblerRecipe(GT_OreDictUnificator.get(OrePrefixes.plate, Materials.Magnalium, 6L), GT_OreDictUnificator.get(OrePrefixes.frameGt, Materials.BlueSteel, 1L), ItemList.Casing_Turbine.get(2L, new Object[0]), 50, 16);
         GT_Values.RA.addAssemblerRecipe(GT_OreDictUnificator.get(OrePrefixes.plate, Materials.StainlessSteel, 6L), ItemList.Casing_Turbine.get(1L, new Object[0]), ItemList.Casing_Turbine1.get(2L, new Object[0]), 50, 16);