Not a question, but an offer to look at the web page (click there) I just put together 'splaining how to accomplish this feat. (These are the Unicolor print drums, not the ones made for film processing.) If anyone has any comments on my work, I'd love hearing them. I must say that I'm very happy with the results I've gotten from the Unidrum, both on 9x12 and 4x5 film. It really is a great little system.