I wonder how much clutch wear is caused by incorrect adjustment. When I see well over 100,000 miles with almost no wear while another is worn out at 82,000 I have to wonder what could be the cause. Riding style may have some effect, but how much stop and go does it take to wear out a clutch? I suspect a previous owner who did't know how, or didn't bother checking for correct adjustment kills a lot of clutches.