Where do i go from here?

This is a little above me but I'll get the ball rolling, dynamic ratio 8.7 isn't low and anything above .040" quench is starting to lose its effectiveness. Every point of CR is worth about 4%hp so say your engine would make 450hp now and if you went down to 9.7:1 CR you would 430hp. I go with a 0.040" gasket to get more quench and open up chambers and deshroud valve to a larger cc.