Huh? This is insane, Ron. It's amazing how story changes over time.
I make all my phthalated gelatin myself and they are of very good quality. It takes 5-10 minutes of reaction time. I also make gelatin sheets in dry form after phthalation, which takes more work than phthalation itself.
I have my data for optimal digestion for different grains, but I don't have yours. But I'm not worried, my grains are core-shell tabular grains of at 3 layers and whatever you have is not applicable to mine. I create sulfur, gold and reduction sensitization centers at different parts of the grain, and my technique is not dissimilar from what's published in literature.