Greetings, I wonder if anyone has any tips or advice on how to make a sound couple between header and muffler. I have CB450k1 pipes and the left hand side parts link together OK as I have to twist and push to get the muffler over the header then put a heavy duty hose clamp on, feels rock solid. On the right side, however, the joint is loose and it there is no friction, even with a hose clamp it isn't tight. What is that material on the tail end of the header and how is it put on? Any advice or tips would be much appreciated, cheers, Hawksmoor