For a trainer... don't bother with the flaperons. It just adds something to help confuse you more. (and you'll get in enough trouble wthout them...) Also, if using the 5/6 ch "master" box and a 4-ch "buddy box"... the flaperon function will be disabled while the instructor holds the trainer switch down. The aileron on the aux channel will go to FULL deflection (which way? can't predict until it happens the first time. It'll be the same every time for the same airplane and "Master" TX.) With one aileron at a deflection the other CAN'T match... the plane goes into an uncontrollable roll. (thankfully... when the insturctor lets go of the button things go back to normal. [img]i/expressions/face-icon-small-smile.gif[/img] so the plane SHOULD survive. )