Ben, greatly appreciate the reply - I have opened other side and tried to determine what was 'hanging up'. The problem seemed to be with the catch at the front but that is awfully hard to see or get to....any experience/hints or guess? *I notice that little ball/stop on the cable.......might I loosen that to gain more distance to pull? Hmm, bet the mechanism is quite different on the '50, what with the wrench operation OR does that just activate a cable set-up?