You, sir, are entirely correct -- no way I could properly formulate a replenisher, now that you've helped explain the obstacles. I was rather hoping that there some sort of "replenisher for dummies" method that would tell me to use 60% of whatever metol there might be in the developer, 48% of the HQ, 50% of the borax, etc. Kind of like making pancakes from the recipe on the back of the Aunt Jemima box. No so simple, it seems. I do like the simplicity of the Xtol regime, as it involves just using the developer itself as the replenisher, but I rather doubt that the developer-as-replenisher applies broadly to all developers.
Originally Posted by Mr Bill