I know it's a bit of a waste but I was thinking of making some shorter rolls anyway, so I'll try it with a short roll first. One reason I like my 6x9 folder is that it doesn't take as long to get through 8 frames... while 36 seems to take me a month. I'll try a short roll and thanks for advice about the bit of tape on the end of the cassette... I was wondering about how secure those are too! If it does scratch the film, I'll look for one that doesn't touch. I was worried that I was being hopelessly naive to think that I could use an old loader at all, but it sounds like it's worth a try. Thanks Everyone.