Detonation can do some bad stuff over time. But if it was only detonating critically on one hole (using the evidence of pressure readings from others as an indicator), it would still be assembly/machining issue. All holes would have the issue if it were a bolt on/fuel/tuning issue. I dont think anyone would stand behind it after 7K miles. I know I wouldnt. Help fix it and make it right, sure. Eat the entire job? No. Because it's already proved that my job was done right and maybe one of the parts I chose failed. There is something to be said for parts choices, and in that area, I've never liked Blueprint. Bu tthe cheapness factor always wins that debate.