I'm curious how you will eventually make it work...
So am I!
Perhaps I'm being too cautious, because I can't get the mouth of the converter/non-fitting cartridge to fit over the - er, technical term knowledge failure - tube wotsit that allows the ink up to the feed. Maybe it's more of a tight fit than I'm allowing for in my desire not break anything and I must take a firmer line with it. I'll take another run at it some time.
Edit: Okay, turns out I'm an international standard in pathetic! I was braver, pushed the converter more firmly, and I think we have success. I've not actually tried it with ink, because naturally the original slide converter has taken this as a challenge and is now working beautifully, but if I make the switch and find it doesn't work, I'll update again for anyone who might look for this info in the future.
Thanks for your help, mhguda - it all gave me the necessary push to, well, push!
Edited by grainweevil, 15 October 2013 - 14:47.