about every 2 years i seem to need a new clutch.the disk is still good,it just tears the center out.has anyone else had this problem?i have an a f e fresh air kit ,straight pipe,and t.s.t. torque plate in the pump.other than that it's stock.rated at somewhere around 650 ft. lbs. at the rear wheels.any good clutches out there that will hold up?in the winter i have a steel sled bed on, plus the sleds(heavy).in the summer i haul siding equipment and pull a trailer.