Hi, I just received a used Mamiya 645 1000s that I bought on eBay. I'm very disappointed in the condition of this camera, but I've got two real show-stopper problems: First, the film doesn't seem to advance. The camera came with two 220 inserts and no 120 inserts, so I tried loading 120 film in the 220 insert, but the frame advance counter didn't move when I advanced the film crank. I opened the back and saw that the film was still set at its starting position. the gears in the camera body that appear designed to connect to the gears in the film insert don't seem to move when I turn the crank with the insert removed, either. Is the film-advance mechanism definitely hosed on this camera, or is there some trick I'm missing? Also, the shutter-speed dial seems stuck at 1/60. Again, is there some trick I'm missing? I'm about 95% sure that this camera is junk, but I just thought I'd post and ask for advice in case I'm missing something. Thanks for any feedback.