I had the "pleasure" of maidening a "Red Hawk" today.
3-channel rudder-vator basic airplane. Servos pull the surfaces up against rubber bands which pull them down.
The basic plane was 1 oz tail heavy.
The wing was mounted so the leading edge was above the leading edge forward stop on the fuselage, giving it some extra incidence.
The rubber bands pull it forward over the stop.
The wing had a small amount of wash-in on the left side, about 1/2 way out.
The combination made the thing nearly unflyable on the first flight. It couldn't turn left without snapping to the left, which made landing extremely difficult.
Adding the nose weight, mounting a -new- wing which the newbie had with him, and on the second flight I had him flying the thing around.
It's not a bad flier. Takes off poorly though.
The third flight he took off and flew around without anything but verbal assistance.