The problem was caused by MP. The parts spec'd for the Hemis were 50% junk, and the original race guy building them returned all the bad stuff. This frustrated MP, and they switched to Cummins, who strangely enough didnt return parts, and gave the crate Hemis their well deserved reputation of iffy quality. Id ray's using HIS parts, that will help. If he's stuck using what MP supplies, he will end up returning a bunch too. So it's good, but it may not last for the same reasons. MP needs to lose the low bidder mentality and chuck the college graduates from managers positions, and put some bare old common sense back on their employee list. I've said it a bunch of times. Sell me good parts. I'll pay whatever you are asking, but they have to be good parts. I dont use much MP now. Starters(rebadged assembly line part), crankshafts, oil pump drives, distributors.. That's about it really.