Thanks for a very interesting thread, guys. I would have had a similar question (Suntour on a Simplex?) in a few weeks as I get more into my PX-10. All this French stuff, c'est nouveau pour moi.

I have an intact Simplex Criterium RD, and a spare, and found a not-quite-correct but working Prestige FD, but that Delrin isn't getting any younger and it's good to have a backup plan.