OK, so currently we have 795.56 cc's in the cylinder, 2.12 cc's in the piston deck height, ~64 cc's in the chamber, 9.1 cc's in the gasket and 6.0 cc's in the piston crown. Total- 876.78 cc's. Less cylinder cc's- total 81.22 cc's. Divide 876.78 by 81.22 and find 10.795:1 static compression ratio. Intake valve closes at 42 degrees after bottom dead center, yielding a DCR of 9.143:1 on the KB calculator. So, yeah, I suspect it sounded like a coffee can full of marbles.
Keep the cam and all else except the pistons. Change 'em out for some 18cc dish pistons. SCR will be 9.70:1 and DCR will be 8.23:1. And everyone will live happily ever after.