I don't need to call anybody; I talk to high end machine shops on a weekly basis. Not that I would ask them anything, anyway. I know when and why a valve needs to be lapped. So does Mike. So does Reza. So does Ghis. So does everybody else who does their own engine work, who probably pissed themselves laughing when they read this:



Or when they read that turbos are mufflers according to the MTO. Or any of the other sh!t you spout as truth.

Head, meet wall.