So.. I took exhaust off sled to clean it up and paint it. I noticed that the stuff they put under the "heat shield" has been holding moisture and actually caused a dime sized hole to rot through my pipe. Any ideas on fixing or should I replace it? I was thinking of wrapping with heat tape. Does anyone have any opinions on using wrap? Also I am looking to replace my overly obnoxiously loud DG can. Are there aftermarket options or should I just try to find a used stock silencer?