Robert, This lack of uniformity you mention seems a lot familiar with 120 films I've developed over the years for some different clients, and once or twice, for myself. In all the cases, film was old and/or exposed to high humidity situation, such as being used just after been out of the fridge. On these cases, paper and emulsion seem to develop some estrange reaction wich affects resulting image. Have you tried your methods with some other film? Good luck.(posted 8425 days ago)Cesar B.