i have to think some about this but if you .032 off the deck the intake could be sucking or any rocker mounting points not sealed going in to the intake port. as for the rings i have used many plasma molly rings they seal up .what do you have for valve seals . sure the rings are facing the right way was the block honed with deck plates ? were do you have the pcv valve hook in to ? what are you using for breathers ? i would never use a PVC on a blower engine or any thing much over mild build