Talked with all you cat guys last week about my M7 not holding rpms. started by inspecting both clutchs and everything looks good. Now i am in the process of pulling and cleaning the powervalves. My question is which way is the chamfer supposed to point towards the the head or towards the exhaust port. The chamfer was pointing towards the exhaust port when i removed them but they seem to go in both ways just wondering if that could have been part of my problem.