ORIGINAL: Joe14580
4. Lastly, the wing seems to be symetrical. It looks the same from the top or the bottom. There's an identical "place" on both sides of the wing to install the aileron servo. Does it matter which side ? I know the servo get's mounted on the bottom of the wing. The manual says nothing about how to differentiate the right wing from the left one. I understand "if" the wing had a flat side, that side would be facing down, but this one appears to be identical no matter which way you hold it.
To answer #4, assuming the plane is a Four Star 60
The top of the wing has a hole for the aileron servo wire about 1 inch from the root rib and 8 inches from the trailing edge. The instructions mention this, with a photo, on page step 3.
My plane is the yellow version so the openings are fairly easy to see through the covering. Thered is much more opaque so you'll probably have to measure and then find them by feel.