Boy I'm sorry Matthew but, I am so far on to Jay's side of this that it is irksome to me that the correspondence was posted. The man is not a consultant or part supplier, but a designer and seller of cameras.
Think how your questions must have sounded to him:
Q:"Will you tell me how your widget is made so that I can incorporate it into something that will deprive you an income? Is your widget well made and will it hold up in the field?"
A:"No, my widgets suck, but please ask me any question you like -- its free and I want to go out of business."