Comp Ratio someone confirm my numbers please

Flat Top Ross Piston, Edelbrock Performer Heads
Bore 4.10
Strke 4.00
gasket bore 4.180
Chamber volume 65cc
deck hight .051
Dome volume -7.5cc
with .025 gasket I get 10.71:1 CR with quench at .076


Questions for you... These are the deep chamber heads IIRC. What are you calling the deck height? How do you get the ".051" height figure? Dome volume is the valve reliefs, yes? Do you have the part number for the pistons?