I work on a J-Man 3.1 and bought a J-Man for future endeavors. We don't ever use it as the set up is a wee bit different than the J-Man 3.1. It has the universal Tube Holder that includes the main tube holding fixture and seatstay/chainstay holders. Im the second owner however, maybe one frame has been built on this fixture. It looks new. Includes a very sturdy stand. Im wanting to get 3000 out of it including the stand. It's ready to be boxed up.
PM me for more details.