I fixed the Conataflex. It turned out to be a very simple stuck mirror, which did involve taking the top off the camera to get at a small lever that wasn't moving, but that was all. Back together it worked fine and I managed to put a roll through it.
Even the meter worked and so did the auto exposure, a feature that made this something of a landmark camera back in the early sixties. It was very easy to use but the lack of a quick return mirror was a litle frustrating as the view through the finder goes black after you push the shutter.
What next? I sold it, so time to find a new camera.