I converted a JD 111 to move pretty good down the road. Realized I got the gearing just right so that it does wheelies. Unfortunately the tranny absolutely gernaded. It had a peerless 801. Basically the big differential gear lost a bunch of teeth. I do know that before all this the big gear was missing 1 tooth but would work fine, this may have contributed to the whole gernading. Will I have any more success with a peerless 820?