I haven't processed a roll of 120 in a while, but my technique is to unroll the paper till I find the loose end of the film, insert it into the reel, roll the film onto the reel, letting the paper take care of itself, till the end of the film with the paper taped to it comes along and then pull off the tape and the paper and drop them into the wastebasket. All this is done in the dark, of course, and should be rehearsed with an old roll of film, with the lights on and then off. Completely separating paper and film before loading the reel just takes more time, although it works fine.(posted 8221 days ago)