Running a 98 MXZ 583 and having considerable difficulties with the suspension. It rides like a bucking bronco. Soaks up the bumps alright, but the rebound kicks me in the pants. Not the greatest feeling in the world. I usually last the 8 seconds, but enough is enough. I am a man of considerable dimensions at 275 lbs. The whoop de do bumps are killing the back. Any and all assistance would be appreciated.