hey guys I got a problem with a set of sbc long tube headers from hedman they have the ball and socket type flange there on my daily driver a 1980 gmc 1500 with 350 motor they have been on there for about 2 years now they leak badly I can't figure out how to stop it I tighten them up but they never really seal up is there any kind of gasket i could use to stop the leaking? I have a 3 bolt flange with stainless steal nuts bolts and double lock washers they are gasket less design but that aint cutting it now would something like exhaust pipe grease/glue work the stuff you put on pipes to slip fit them together to help them seal, that's the only thing I can think of anybody got any ideas thanks panman