Shower Door Ball Catch Replacement

This is a really silly thing, and I have no clue how long/well it will work, nor if anyone else cares, but here goes:

My shower door has a little catch that is a ball that snaps over the shower frame when shutting the door. A spring lets it move back and forth, and a screw adjusted the travel. Somehow the screw got too loose and the little carriage with the bearing got lost. I couldn't find a replacement, so either I print one or figure out how to get a different catch to work or replace t