So i'm building my first extra... and I have come up with a mild query..

Where is the "zero trim" poing on wings and tail etc.

All other planes I've build, the aileron has been a cut out or the elevator just a flat pannel... in this there are no guide-lines and the tail is profiled too..

as a "guess" I strapped two straight bars onto the control surface and as the 2 bars stuck out farther than the leading edge of the wing.. tried to make the distance from these bars to leading edge, equal.

Or is there another way of doing this? :|