Yeah WEDJ, I got it completely assabout. Comes from try to think about stuff before sparrafart. I even took the thing out and tried it for myself. At high speed there seems to be precious little diff, but at low speeds it definitely rolls left quicker than right, snap rolls 2 to the left, 1 and a bit to the right. Doesn't explain your observation at all. I know you have two aileron servos, do you have equal L and R movement when you watch from the rear? I know that sometimes these computer radios seem to be telling you the right stuff, but the servo centres can be a bit off, giving more movement one way than the other...maybe?
Evan, covered with embarrassment.