I'll have to take it apart and see what kind of release valve it has. I'll pull the handle, too, and see how that fits together, too. I have a machine shop in the garage, so I might spend the $300 in labor to save $25 in parts! Sure wouldn't be the first time. Most of the import jacks seen to use the two gears for the release valve. I guess I don't recall many using a u-joint there. I didn't find much searching for Allied, but I do see that it was a part number of their's. The pictures I found, which might not have been the same model, used the more familiar squared off cylinder assembly. That was one of the first things I noticed about this jack. Guess I'll do some more searching tomorrow. Or maybe I'll just stick it in the corner for when I need a 6th floor jack.
Dave