I'm looking for a part for my 8 x 10 Kardan Bi. On my camera the small lever that frees up the rear swing and shift is missing. There's a very thin nut exposed and I believe the lever just sits over the nut like a thin wrench and is fastened down with a small bolt. If I can find one it would be great, otherwise plan B is to make a 3D printed part out of plastic and play with it until I get the fit right, then sent the file to a service outfit to be printed in metal.

Am I missing something (apart from smarts, which seem to degrade daily.)