Any film you can buy in 120 can be converted to 127, potentially with no tools more sophisticated than a cigar cutter. If the Komaflex frame stop is friction wheel "length counter" type and can handle more than 12 on a roll, you'll get about 18 frames (narrower than 6x4.5). If it's a "turns counter" type, it's unlikely to deal well with more than 12 on, and spacing may be a bit off (shortening as you go) because modern film is thinner -- but it'll still work. Adding some additional backing paper leader helps in the latter case, but a full length cut-down 120 only just fits on the 127 spool.