Fwiw, having the ailerons set up using two channels in "flaperon mix" doesn't mean you acutally have to drop them as flaps, or have the ailerons move together as flaps at all, ever. Some radios (don't know about yours) allow you to set the travel adjust on the flap channel to 0 to keep you from accidentally moving "flaps". I've set up a couple of my planes this way, it makes installation and trimming easier at times.