[dirty4man]

is there any flex in the pipe itself, you may be able to install a 1'' bushing behind the muffler mount. The bushing should move it out enough to clear the spring and also center it up coming out the rear. The rear shot you have posted looks as if the muffler is pushed against the frame.

 

[dirty4man]

Man that sucks, hopefully HL will have something good to say. It might also be a design problem with the exhaust, I have a friend with an Arctic Cat that got the HMF and we had to mod the mounts for it to line up and seal off.

 

[dirty4man]

The only other thing I can think of is to loosen the header pipe up front on the head and roll it up a little, this will also push the header pipe out some. By looking at the picture's I can't tell if you have the room to do this or not. good luck and hope you get it taken care of.