I am trying to find a replacement gear for the elevation motor on my Beseler 45V. The Charles Besler company is unable to supply this replacement part. My two questions are: Does anyone know a source for this part? Can I convert this enlarger to a hand-crank elevation style if I fail to find a replacement gear for the elevation motor? Thanks for any help! This enlarger seems capable of lasting me the rest of my life, but I need to get this gear problem fixed soon.