Andy,

I would agree that the ailerons (as well as rudder and elevator) are quite responsive at the factory settings. I set mine up, when building it, at those limits. When I got to the field for my initial training, my instructor programmed my radio for dual rates of about 65% = low and 85% = high (if you want the option) on each surface. I imagine your instructor did something similar.

I think the reason the Avistar is relatively more responsive than a typical trainer is that it is an "advanced trainer", allowing for greater speed, manueverability and responsiveness. Keeping the rates low gives you a fine trainer now, moving the rates up later allows it to extend beyond other trainers in aerobatic ability. That plane is really great, wise choice on your part, you'll get a lot out of it.

BTW, I have now graduated to 80% = low and 100% = high and have moved to a .46 engine. Great fun!

Jim