The clutch went out. I split the tractor at the rear of the engine and found I also had a damaged release bearing assembly. Got one from Don and had local mechanic install the used one on the existing shaft. Also installed new pilot bearing. I guess I didn't pay enough attention when I pulled the shaft, but now I can't seem to get the splines at the rear of the shaft to align with anything...did a gear slip off the end of the shaft & drop to the bottom of the torque tube? Figured I'd stop and get help before I make things worse. Any ideas?