Great stuff Mike, thanks for taking the time. I have a couple questions about your Tempest mods:

Moving center of pressure inboard....this is done by increasing the chord at the root and/or decreasing at the tips?
Swept the tips forward.......Why? This moves the COP forward?
Increased sweep for more dihedral and inverted stability..... Not sure I understand. Are you talking about swept back as in jet fighters? Seems opposite of swept tips forward. Or does this mean greater difference between root and tip chord?
Why don't all pattern planes have the wing located on the center line/thrust line for axial rolls?

OK, thats more than a couple of questions! I want to make sure I understand so I can compile this info into my "Little Book of Truths"

Umm, just one more teeny question. Do the majority of pattern planes use airfoils from the same family? ie. NACA 0012, 0013, 0014, etc? Or are there as many different airfoils as there are airplanes? How about changing airfoils from root to tip?

Oops, thats even more questions!
Sorry, I'm starving for knowledge!

Thanks for the info and help.
Steve