Quote Originally Posted by Mark Layne
If you can find a friend with a lathe, trim down 120 to fit. I've been doing this for a long time now and saves all kinds of respooling hassles. You need to trim both the spool diameter and take a whisper shave off the length.
Interesting idea, I've just been trimming the edge of the spool with shears - not very precise but quick.

This trimming works with most cameras, but a few have decidedly smaller, uh, nubs, that fit into the hole in the end of the spool ... what's the best way to deal with that? A few years ago someone was selling some sort of inserts to basically shim up 120 to fit 620, I've been thinking of trying to come up with something like that using brass tube from the hobby store. Any ideas?