Nitrous vs head gaskets

Probably should dial in the nitrous tune-up before taking away the pressure vent. Currently the head gaskets are the weak spot that's letting go. If you add studs and serious gaskets/o-rings without sorting out the tune, where's the pressure and heat gonna go? Bye-bye rings, ring lands, rods, upper rod bearings etc. Something else has to take that beating. And all of those things are more money and work than gaskets. Tune then strengthen would be my route.