I have a 97 RSTD 4 ito 2 exhast system . Wanted to play around with new slip-ons.The mufflers on it now are an aftermarket type. I cant get the slip-on section of the system to budge. Removed the rear muffler to frame bolt.Removed the clamp nut & bolt on the muffler, but I cant get the muffler off. Have tried using a chisel and punch and a small sledge hammer too.When I try moving the muffler around to try and break the seal it has made the whole muffler assymbly moves as well . I feel I am loosening other parts that should not be .Does anyone have suggestions for removing a stubborn muffler?