No, I leave that to the machine shop. It's a reputable shop though. The engine runs fine. I broke in the cam per intructions, Has great power with no valve train noise. I wanted to check the pushrod length for good measure because I had a little valve train noise with the other cam. There are shorter pushrods for purchase, just not the length my test is showing I need. Maybe I will do a couple different valves to make sure it is all of them and not just the one.