I go to pick up my 6x9 rollfilm back for my 3x4 RB Graflex from the post office today. Can't wait to get it home and put a little film through it. Now I'm back into a medium format (of sorts) camera system, but with the advantage of the LF lenses that work on the RB Graflex. I'm also going to work on adapting my Polaroid back that I had for my Hasselblad to fit on the RB Graflex. Does anyone know if there are instruction manuals for the Graflex rollfilm backs out there online?