this sucks some thing is tinking around inside my driver side 40 series flowmaster-rust? Its driving me nuts anyone know how to get rid of it short of removing the mufflers and tailpipes. I took the H pipe down and could'nt get at it , rev'ed it , beat on it - Im at a loss and dont have alot of time to pull it all down and it is welded at that but it looks like I have to pull it I just dont want to if I dont have to. it sounds like something inside the muffler desinagrated and broke of and is pinging around inside.HELP thanks