Engine builders /dyno operator said it made best power at 37°.
I have decided the vertical gas ports were a bad idea for this endurance engine and will replace the pistons with no vertical gas ports and lateral gas ported rings. I am confident Wilson Manifolds can make the intake fuel distribution better. I will add an air filter and figure out how to minimize the turbulence in the cowl scoop. There was a lot of (low) pressure above the scoop at speed, as the scoop was rising about 2" or so, and the high pressure of the air flowing over the scoop pushed the windshield in while rolling rhe factory style gasket off the pinch weld. We fixe dthat by putting the gasket and Lexan windshield back in place and supporting it with a 1x block of wood against the roll bar, so there was some interesting wind/turbulence happening there. I think that turbulence had a lot to do with it the fuel distribution problem. We will see. Thanks for all the feedback.