I am shooting with a Pentax P30T. It's a really fun camera; light, excellent VF, and sharp looking to me. The problem is, it's one of Pentax's later MF SLRs and reads DX codes from film and doesn't allow manual override. That obviously prevents any pushing and pulling, which I don't do too much of anyway with the films I shoot most often. If it can't read a DX code, it defaults to ISO 100. The issue is I bulk roll film into non-coded cartridges. I use Kentmere 400, which isn't the best film in the world but I still have a good bit of it to use. I've heard before that people bulk roll into cassettes they scavenge from 1 hour photo places, but I've never known how. I'm not sure how it's possible since you can't disassemble the cartridge and attach the film to the core of the spool. Can you describe the process to me? Is it even worth it when I can buy coded cartridges from B&H for less than $1 each?