Iím interested in developing 7x17 in the Jobo. I applaud your efforts on the design, but I wonder if you are making this too difficult. Earlier thought was to fabricate some sort of screen with tabs to hold various formats, which would slide into a standard Jobo 3063. There was a discussion on a LFF thread, but nothing came of it. But regardless of the design, Iím interested in whatever you come up with. Thanks John!