I don't think I will have a valve to piston problem, as I already had to fly cut my pistons for the proper clearance.How much do you think could be removed on the angle mill until I have to address head bolts lining up correctly? I also thought I would have the intake and exhaust angle milled to straighten them up. I believe if I take off around 140 thou., or so, it should make a noticeable compression change. The entire goal is try and gain compression.

That's good, tighten it up till it strips, then back it off a quarter turn!