I recently bought a Soligor (Miranda) TM in good condition at a camera show. I've always been impressed by the build quality on Miranda cameras, and this one is no exception, though I believe it was an entry level product. This particular model was fitted with an M42 mount so I can use it with my old screw mount lenses. On to the problem. The shutter speed dial will not turn to B. It looks as if it is actually by design; the dial will not turn past 1/2 sec. It stops at a red dot on the speed scale between 1/2 sec and 1 sec. I assume if the speeds are on the scale you must be able to use them, but I can't figure out how to get past the red dot obstacle. No hidden catches like the one that releases the removable pentaprism. I can't find anything on the Miranda Camera site about this, nor can I find an online manual. Anyone familiar with the camera or have a manual they could consult for me?