I agree on that it depends on the dealer sometimes they can find some how to warranty they need to be tactfull on the claim. One thing to think about is kibblewhite valves are good alternative to stock and are more economical. I used stock oem because I did not want to wait for parts. Also my guides were fine. rember though different valves require different keepers etc. I do feel your pain these thumpers are not cheap to do I had 200.00 into mine and it was just the exhaust valves. Good luck.