I own a 1370 that I recently removed and over-hauled the engine, about 300 hours ago. It runs and shifts great and pulls anything I own easily. Then the diff started acting strange and making noises so I parked it. Now I'm trying to decide what to do with it, I want to take it apart and see whats all messed up and at this point I have to think about the P/S and the rest of the drive-line. I'm mainly concerned with finding parts and I was wondering If there are any modifications to make the diff last, I've seen something about larger bolts in the P/S and it would be nice to find some factory repair manuals. Any thoughts?