OK, I was having a look at the drum I have for my jobo. I have a 2840 drum for paper processing, as well as a 4321 35mm drum.
OK, correct me if I am wrong. I should be able to split the 2840 drum into a 2820 drum, that COULD do film. If this is the case, could I use the spiral out of the 4321 35mm drum? What other spirals could I use? What else would I need to use the 2820 drum for both 35mm and 120 film?