Dear Durst-lovers !
As mentioned earlier Jensen Optical / Durst Pro USA is a main source for spareparts and accessories for the big Dursts and even complete enlargers. There is also a German Company, Kienzle Phototechnik , that can supply you with parts for some of the big Durst models and they also manufacture their own enlargers. Kienzle have more parts than are listed on their web-site, so send them a mail if you want to know more. I enclose links to both companies.