building a 302 for a customer and friend of mine,had a fake wanna be DZ block in it that someone restamped and screwed up the decks and it needed to be bored anyway so we ordered speed pro l2210af +.030 pistons for it,block is 0 decked and with the 64cc head and .039 gasket it will be 12.05-1 comp and i want to cut the piston for 11-1 compression,this piston in my catalog shows effective dome volume of 15.4cc and is .430 tall,does anyone know how much i can mill this piston down to reach my compression goal or do i need to be looking for a thicker head gasket? Thanks for any input yall can give