Hi! I'm a newbie to photo.net but have been reading your forums for some time. I have recently purchased a 1973 black body F2S, my second F2, the first being a 72' F2 Photomic. After getting it home I noted a the shutter speed does not differ regardless of where I set the shutter speed dial (It checked out prior to purchasing it). Other than the bulb setting all settings work as if the shutter dial is set on an upper speed. This is also with or without the lens. I switched out the DP-2 finder with my DP-1 but found the results to be the same as well as replaced the batteries but nothing seems to make a difference. I paid about $150 for the camera and haven't taken it in for a CLA yet. Does anyone have any idea what this might be? I appreciate your thoughts on the matter. Cheers!