Thanks Raz and Chris. It's so nice when the jumble of ideas and guesses suddenly come together and you say to yourself "okaaaaaaay, I get it now!"

Chris, you are one high-speed, low-drag, nap-of-the-earth instructor. I've really enjoyed GF1 and 2 (working on chap 3 now). Thanks for making this fun, fairly easy, and always interesting. I'm sure I'm going to enjoy discussing theory with you in the future.

GG