I did on mine. I'm fortunate in that I have a friend who does really high end machine work for dirt track guys. He has a very new Rottler and can set it up to cut eight, ten angles at once. It's pretty badass. That's what he cut my head with. The only way I could see the 45 was when I lapped the valves in. The valve seat area looks convex in a round shape there are so many cuts. It's pretty dang nice. The valves he said only really the 45 and a 25 back cut on the intakes, so that's what we did. It turned out nice.
