I need the axle pivot trunion pin for a 1983 500 series. On my machine the trunion is on the rear 5th wheel assembly. I have the trunion pin from the early 500 series I had for parts but it was in the front on the earlier models and although similar, it is not the same. I still have the 5th wheels from the early model for sale. If you have a trunion pin for sale, please send me a private message with info. Thanks ahead of time.