The stud length usually doesn't allow a thick gasket to be used. Is it really necessary to use a gasket under a phenolic block? I always wet-sand the insulator block on a piece of plate glass to make sure it's flat on the top and bottom, and don't use a gasket on the intake manifold side.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
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