FYI, A while back I loaned my 755 to my brother-in-law. He was kind enough to return it with a blown motor. After the tear down it was apparent overheat was the root of the evil. I figure between the air filter clog and the front grill loaded up the over heat cooked her pretty good. Any way my point is, during the rebuild I found the new wrist pin bushings purchased from John Deere fit worse than than the worn originals. John Deere was very helpful and pulled new bushings from three other lots, all with different tollerances. Quality control? I wound up with a little yankee inginuity, I measured the new wrist pin, the new connecting rod and resorted to a search in a engine rebuild catalog and found a 1986 Renault Alliance had just the right size. I narrowed them slightly, improved the port, and got a perfect fit. I figure the entire job was about $900.00 in parts and some engine shop machine time. The lesson is two-fold, 1. Don't loan your tractor to my brother-in-law and check your new John Deere parts before you install.