Never had cork leak after an intake install. Best cork versions were the Felpros with the.....never mind^^^^^^^^. In lieu of that some spray adhesive works if the gaskets don’t have the adhesive (block side only) China walls need to be degreased thoroughly before affixing. Then RTV black in the corners. There’s a difference between correct (sparingly) use of the RTV and over application in some cases.
Don’t go cutting the end of the tube off and using your elbow to spread it. (Just an expression we used in my construction days using caulk doing siding, kitchens and baths) :eek:
