John, you are probably remembering this article:

http://www.apug.org/forums/forum223/...lta-films.html

In it, Gainer suggests keeping the Phenidone and Hydroquinone in a separate glycol solution. But nothing more appears to have been done with this idea.
I tested FX-37 once: Compared with XTOL, FX-37 gave less shadow-detail despite being overdeveloped. I was not impressed, and would suggest using XTOL instead.

Mark Overton