ORIGINAL: MinnFlyer
IS the wing held by rubber bands? If so, you might want to add a few more. Sometimes the wing can lift at the leading edge and cause a pitch up
Good call about the elastics.
The plane will not perform the way you want it to, especially if you're the "Bank-n-Yank" kind of pilot.
Fly your flights smoothly and at half power once at cruise... it better for the airframe.