Going to a 55 mm tool steel cam and dropping valve weight by over half. The compression ratio was close to 16 to 1 with a .060 gasket and with a .040 gasket it's out of sight. I believe that the biggest problem was water distribution and flow
We are going to do a new billet head this winter.

It's not necessary to build a swimming pool to determine that a bowling ball won't float Zora D