Yeah Don, my rear muffler had the lip folded over so when it gets hot it doesn't hit the tow bar. I'm not sure if you've ever paid attention, but if you have a look at where the rear muffler sits when it's cold, then when it's hot, real hot, just after doing a few pulls, it sits an extra 1.5" to the rear. The whole exhaust expands that much being stainless. Also mine starting hitting again when it got hot on the weekend. I almost lost it when I heard it!