I work primarily with a Linhof Karden Color 45 s which takes the flat 6" boards. I also use a Speed Graphic. What I would like to do is have my 150mm lens mounted onto the Speed Graphic board and then fit it quickly to the Linhof with hopefully some kind of adapter so I dont have to unscrew the lens from its Linhof board and remount it to the Speed Graphic. Does this exist or do I need to make it? thanks.