im leaking exhaust past the flange at the bottom of my dc sports header downpipe, which then connects and goes to the catalyctic converter. its making the exhaust extremely loud and i believe im at a loss of power due to loss of backpressure, anyways is there anything that can be put at the connection to help everything stay together, i know you just tighten the 2 bolts into the lock nuts but is there anything that will help seal the connection better?