Thanks to all for the replies. Some really useful information given.
I decided to see if I can get behind the stuck shutter issue. So I fired a few shots without film. I noticed that the light meter died momentarily before the shutter stuck. So it occurred to me that the batteries could be at fault. I replaced them, and subsequently haven't had the problem again. So it seems the camera is fine, for now at least. With some exercise the lenses have become slightly less stiff, and are now on the stiff side of normal, and optically 100%. I have decided to keep the set together, and will use it until I can sell it as a set. The 90/2 in particular is too nice to just give away.
Edit: The camera is good enough for me to keep for the sake of using the lenses. I will not miss the DOF lever too much. Since it seems the problem is mechanical rather than lubrication, I will simply ignore it. This same guy had an R6.2 with 21 mm on it that got stolen. Now, THAT would have been worth keeping.
Last edited by dorff; 03-10-2013 at 08:33 AM. Click to view previous post history.