Having problems with my Tractor, think its the Clutch, it only has 154 hrs and acting like the Clutch went out, I tried adjusting the linkage each time it stoped on me, it would work for a little while and then go out again when putting a load on it, every time the PTO was engaged it would grind @ idle speed after 3 times of adjusting it, it wont budge. Does anyone have any idea of what hapened?