Microdol-X contained at least one additional ingredient - an anti-silvering/anti-plating agent which may or may not improve sharpness by inhibiting physical development. The ingredient is a trade secret. Anchell/Troop guess at it being a relatively weak agent, while others claim it is a Mercaptan. Who knows? PE does. But he can't disclose it.
I can't help with your Autofine questions, other than to say it is unlikely Hydroquinone is the only developing agent unless it is a highly alkaline developer, otherwise it wouldn't work.
Forgive my ignorance, but can't PE disclose stuff if they stopped making it?
Mamiya: 7 II, RZ67 Pro II / Canon: 1V, AE-1, 5DmkII / Kodak: No 1 Pocket Autographic, No 1A Pocket Autographic | Sent w/ iPhone using Tapatalk
~Stone | "...of course, that's just my opinion. I could be wrong."~Dennis Miller