So upon further consideration, I'm thinking that Adams probably used more exposure for the Windisch neg than he did for the D-23 neg, and with ABC I'm rating TXT at EI 160, so pyro per se might be a red herring, and it could just be a matter of developers that give a lower speed, thus requiring more exposure, are more likely to produce solarization. I'll still run some tests, but I like this theory better than my original pyro theory.