I recently exposed a roll of 35mm in a way that required me to rewind the cartridge by hand (in the dark, of course). Not sure what happened, but the roll jammed just as the last inch of leader was about to go in. I can neither push the remaining leader into the cassette, nor pull it back out. While rewinding, I experienced no resistance, but now there is some resistance. It turns but not freely. In any case, I don't want to mess with it much more for fear of breaking or tearing something. Maybe I rewound it backwards. I doubt it, but I really don't know. It was a fresh roll of Fujifilm Superia 400/24. Is there something else I can try to fix this? Or more to the point, can someone suggest a lab that might be able to special handle it? I don't fully understand how the big automatic machines work; I'm thinking it might have to be cracked open by hand. Dwayne's is my mail-to lab of choice at the moment. Thanks in advance.