I have one of the old Kodak tanks with an apron. I tried it on 122 film (3 1/4 roll film?) and it didn't give me decent negatives at all, whereever the film touched the apron it developed differently. I would try one of the cheap adjustable Yankee tanks. They're adjustable for several different width films. I suspect if you place the top and bottom separation just right in the light, then load your film, it may work. Worth a try. I've done advantix film a few times and I just see sawed it through 4x5 dip tanks in the darkroom.