I went to replace my Fulton Jack only to find out that you can no longer get a direct replacement for Dri Doc trailers due to to the bolt hole spacing on the bracket that is welded to the frame...so I went to BPS and picked up one of their $27 trailer jacks.... I then removed the Jack from its mounting plate by removing the split ring that holds it on. I then took my existing Fulton Jack and removed it from its mounting plate by removing the center bolt.
Now, I discovered that the new Jack had a 2-3/8" diameter hole and the mounting plate had a 2-1/2" male end.... so I took a drum sander to the new Jack's hole and opened it up by 1/8 of an inch... I married the new Jack with the old mounting plate and reused the mounting washers from the old Jack.....added a little grease and Wallah.... everything lined up perfectly and worked flawlessly... on the pic with the completed unit, the two parts on the right are the only thing I did not reuse from the new Jack.