Thanks to all of you. Your suggestions have been...enlightening!

This is NOT the way I thought this would play out!!! I had assumed the light was behaving as it should. There are many benefits to living in relative isolation (it's a 1000 mile drive to the nearest photography gallery, or store that sells large format film) but not having peers, or others around to ask questions and learn from, isn't one of them.

Thanks a bunch...(I'm going away now to question Calumet and Google / my a$$ off)