I load 35mm bulk film for a while now, but I still haven´t found a way to firmly secure the film to the cassette's spool. When I'm using my manual Zenit, I have no problem, but when I'm using a camera with auto-advance, the film gets detached from the spool, and I can´t rewind it. I normally use double sided tape to hold the film, but it has shown to be a mediocre solution. Are there any other ideas?

