Head Assembly
 

Now that the snow's fallin, and I got all the parts, I wanna build up a z6 head. Cam, seals,springs, retainers and valves, stock size. I was gonna do it myself, but, will there be a problem with getting the valve to sit in the seat. I had my a6 shop done, moderately expensive. I've got all the specs, but how would I check for a good seal?