Thanks for your feedback. Actually, the transmitter (Futaba model # 6EXAP) is programmable and does not have external channel reversing switches. All channels can be programmed to "normal" or "reverse" in the transmitter. This is done when first setting up the new airplane/transmitter. In my case, all channels were set to "reverse" when I set up the new airplane. When my preflight indicated that the airerons were reverse acting, I changed the transmitter program from "reverse" to "normal" for channel one only. Then the airlerons worked correctly. Thanks for the comment re the Nexstar, it has been a great trainer airplane.