hi i have a nikon fm10, the shutter curtain got bent and jammed and i took it to get fixed, but when i loaded the film i could only advance the film once before it got jammed again. i will take it back to the camera repair man but i don’t have time until a week from now and ideally id like it fixed sooner than that. i’ve been trying to find a youtube video to fix it myself but i can’t seem to find one dealing with my specific issue. can anyone help?