John Bartley said:
Hi Dan, No, I have't tried that (yet

), and yes, I was using
the 7.5+100 gram version. So far I've only tried varying the
amounts of the components. I assumed from reading, that
the "B" bath needed to be an alkaline "activator". I've
also wondered about the term "divided". It's not
really is it? It's more "extended"

cheers
D23 is not really a divided developer; two bath or A + B
would be better. D23 is a complete developer in itself.
Metol is quite acid and even with all that sulfite the ph
runs 8, perhaps 8.1 or.2, depending upon the actual ph
of the sulfite. One big producer of S. Sulfite states a ph
of 10 +/- .3; so phs of 9.7 to 10.3
I've been wondering how you could claim good print
results at the low D23 ph. It must be your B bath that
does it and the fact that the carry over of metol from the
D23 is so little as to pull the ph of the borax B bath, ph
9.2 +/- very little, down only a mite.
I likely give that a try with a sulfite B. I'm a minimalist.
Think of that, metol and sulfite for film and paper. As for
"moving" parts, there couldn't be any fewer. Dan