Hey all, today i put a pair of edlebrock headers on my truck with a few buddies. the removal of the manifold and installion went without a hitch until i fired her up and there is an annoying exhaust leak. we localized it to the flang above the right cat. we took it apart twicd and even used a new gasket. someone please help. would a gasket sealer be a good fix or should i take it to a shop???