I know racers that use two sets of gaskets, one glue to the head and the other glue to the rocker cover so they can remove the covers without ripping or tearing the gaskets up. They use chassis grease as a lube between the two mating surfaces I've double gaskets in the past to gain cleanrces also, another way to get additional clearances is to either dimple where they hit the baffles with hammmer or use a small hloe saw to cut a hole where they hit Lots of different ways to skin the kitty : whistling: