I'm about to start my long-planned experiment series with EFKE KB25 in a selection of acutance developers. The main object is to retro-engineer a home-brew version of Neofin Blau; in the process I will use that, Beutler's original, FX-1, FX-2, and various Beutler derivatives. A Metol/phenidone combination with minimal sulfite seems to be a possibility...

I'll let you all know.