ItemStack trackStock = getStackInSlot(slotStock);
if (trackStock != null)
if (RailTools.placeRailAt(trackStock, worldObj, x, y, z)) {
worldObj.setBlockMetadataWithNotify(x, y, z, meta, 0x02);
Block block = worldObj.getBlock(x, y, z);
block.onNeighborBlockChange(worldObj, x, y, z, block);
worldObj.markBlockForUpdate(x, y, z);
decrStackSize(slotStock, 1);
blink();
}
}