Did you use new head bolts last go round? they are 'torque to yield' bolts and reuse invites blown gasket. Only used once..........
I'm not big on graphite gaskets, they squish out of shape in varying amounts, the graphite just too easy to compress and offers no even resistance. Flipside though is surfaces they are used with clean off like lightning, one reason I don't like them. Your gasket should stick better to surface than that to me.........I rebuilt 6 inch piston air compressors that kept blowing gaskets, moving away from the factory graphite gasket stopped the problem.