[Rick Parker]

IMO it starts with the business that cast the blocks. If it was represented (by the vendor) to you that the block would accept the necessary bore to correct the flaw and you then experienced this problem, the vendor should make it right to you. That being said, the individual or company that cast the block has some incured liability at that point to the vendor as do you to your machinist. Asking or expecting the machinist to be paid by the vendor is not right either. You've all heard the phrase s*it flows downhill (?) It's true. Everyone in sucsession has an obligation to the next in line. The originator (who cast the block) has the greatest exposure. I hate seeing or over hearing people get the "Two Step" when someone else has made a mistake.