My collectors are warped. They meet at the three points of the "triangle" but the metal between leaves a rather large gap where i have a very annoying exhaust leak. I have tried doubling and even tripeling the gaskets on them but it is still not enough. Do you have any suggestions? Is there a product out there that goes inside the the header and the exhaust pipe that bridges the two? I don't know if it matters but i have a 69 firebird and three inch collectors. thanks for your help.