Does anyone know of any photographs or drawings showing a Rek-o-Kut M series recording lathe arm with the mounting unit for the Astatic M-41 cutting head? I acquired what I thought was one, and although the head unit fits right in the frame, and the needle tightening screw and head mounting screws line right up with the holes for them, the extended metal frame on the head does not lie flat, so the head is not at the right angle. So I'm not sure if it's not the right mounting unit or not.
Thanks,
Mark