I've got a Rollei 3.5F (SN2282038) f/3.5 75mm Planar, and it seems to me that the flash synch "choice lever" on this camera is a bit weird. As you look at the front of the camera, to the left of the viewing lens is the small lever that allows you to choose bulb sync (lever near lens), X sync (lever above and touching the little metal post), and then you can push it all the way counter-clockwise for the self-timer. What strikes me as odd and fraught with danger is the little quasi-spring loaded knob on the lever that is supposed to maintain contact with the metal post for X-sync. The ability of the camera to sync properly relies entirely on that little knob remaining in contact with the little metal post. You'd think there would be some more positive way of ensuring that contact isn't broken as the camera is being tossed around. Does anyone have any views on this? Is there a piece missing from my Rollei? Thanks.