the bores in this casing are significantly undersize (well below the bottom tolerance limit, more so at the TDC position Example being that the output bores should be 22.8376 to 22.8403 (580.07mm to 580.14mm). At the top/bottom position, we are getting 579.92mm (front) to 579.96mm (back), other is 579.92mm (front) to 579.99mm (back).