I have a nasty leak after my throttle body. I have a 97 gtp with a 3 bolt throttle body. The sc should take a 4 bolt. I have an adapter plate. It won't seal. I have block sanded the front and back to make sur it's flat. I replaced the 3bolt gasket and made a 4 bolt gasket. I used Indian head gasket sealer and it held for 2 days.I tried silicone and new gaskets, lasted about 10 min. I used only silicone and leaked. I need to smog the car and cant be driving with a lean condition. Please help. The sc to intake gasket had to be made as well. Lower intake is ported and inch on he passenger side. Any ideas? In Modesto ca thanks , Todd