Dan, I'm not sure I completely understand why at higher speeds your wing angle of attack will be less. If you are trimmed for level flight at 150MPH going to 180MPH should only require a small amount of trim adjustment (less than 1 degree I think)
I truly believe that an AOA of 2.5 degrees at the root with 3 degrees washout is more than sufficient for AS series airfoil. I had a conversation with Langford about this and his airplane has slightly less AOA at the root and he wished he just a bit more for high altitude flights. Or actually I believe it was because I fly at such a high altitude that I needed more. I'd have to look at my archives but I'm sure that was the jest of our emails. Hope this helps. Fred Johnson Reno, NV
