In comparing two rolfilm backs I have, a probably newer Graphic 6x7 24 exp (yellow handle) and a later model Wista 6x7, I can visually see a difference in the setback to the pressure plate. Have you encounted this and how are you compensating for it. My use is on a Crown Graphic camera, and I would prefer to use the newer Wista back which has larger rollers. I'm thinking the Graphic back has the correct setback for focus and if it does, I'll have to compensate the GG view for the Wista, yet I'll need to use film holders as well. Thoughts?