i tear the new bike down to repack the muffler and sand the ugly white fram.....i took the header off is the only thing that holeds that in place is the two springs? does it just set in the flange...?and where the header meets the exhaust they had a rubbber looking hose...lol and it had a hole in it what is the best thing to put there to keep the exaust gas's going good and last long..?