I guess I do tend to over analyze. And some of you are saying, "What do you mean 'guess'"?
But that's better than the alternative. This testing is teaching me a great deal about variations in film, and how to test them. I didn't know that films varied so much. For that reason, I now realize that a developer needs to be tested with every film being made by Ilford, Kodak and Fuji. And it wouldn't hurt to include Fomapan as well.