Thanks for the kind words guys - and likes! I worry about sounding like a know-it-all but it really does help me to understand the physics of things so I like to help when I can and I am glad that at least some folks find it useful. I won't weigh in unless I actually know what I am talking about and if I get something wrong it doesn't bother me to hear about it.
Now, if I can only get my fish and water knowledge in better shape I might really be useful.................................
