Hi, I have made a graflock back for my Miniature speed graphc based on measurements of an old XL back that I had and a lot of guidance from Bert Saunders.(thanks)
My question is: I have noticed some differences between the XL and what I imagine are older graflock backs used on speed graphics. Do the different roll film backs - RH10's and Graphic 23 backs - both fit either type of graflock back? the graphic 23 type is cheaper and more readily available and I wanted to buy the back to make sure everything fit before I screwed the slidersand everything into their final places.
Cheers, Aaron

Aaron, any of the Graphic roll holders for 2X3 cameras are interchageable. If you go with a "23", try to find one with pin rollers in the shell. They came both ways, with and without. The pin rollers hold the film a bit flatter. All RH series holders have them. In any case, pin rollers or no, the film will be flatter if you advance it just before taking the shot.