Hi once there was a page at Jobo with instructions on how to do this at this url, however it seems to be dead. I can't find any other instructions which contain pictures. The reason I ask is that I have bought 3 spirals from ebay and one is broken and 2 do not have the red tab that is discussed in the document (google had a cached version) and I'm considering returning them as I believe that I can't use them this way for 120 processing (happy for corrections here) also, there is a small plastic "peg" which pokes up into the spiral interior at an angle backwards to the 'direction' of the film loading. What is this for? sorry to ask such questions, but so far I've only developed 4x5 sheets and 35mm film.