Um, you know the the little divider stick that slides in the side of those little dividing rails in "COLOR BY BESELER" processing drums to let you do 4x5 and 5x7... Does anyone know where I can get spares?
I can't answer your question, but some APUGers have apparently made usable substitutes. It would probably be easier just to get another drum with all the relevant parts, since they're practically being given away. Personal prejudice: Look into getting a Chromega drum; I've found no drawbacks to them over several decades of use.
My though was to use the hot glue that comes out of a hot glue gun that is meant for making furniture. It hardens slowly and cam be worked for about 30 seconds. Wear rubber gloves, and have a vat of water handy to allow too much heat on select molding fingers to be quickly dissapated.