someone reassembled it wrong . the rubber bushings/washers are supposed to be on the other side of the frame for the exauast mounting .
if you want a parts fiche go to
www.fiche-man.com . it's a rip/copy of a factory parts book in pdf . not the best scan job but it's only $23 delivered anywhere and it comes with a rip of the haynes manual .
also
www.bikebandit.com look at the footpeg , then the exaust blow-up and you'll see what i'm talking bout .