Your covering nor the glue joints in the framework will stand to that heat. Mboland is from Australia and the 65 degrees is Celcuis, or 149F. Most of the ARF's use some sort of hot glue, so things could get really ugly. I've had to rebuild two wings, one a 4*60 that was assembled wrong and the other was a crashed Suhkoi SU-31 that the joiner broke in half in a crash. Both wings were taken to bare wood and the center ribs were cut away. Both wings required fabercating new center ribs and making a new joiner pocket, Both required cutting center sheeting to get in beyond the center rib for the joiner pocket.

It looks like that plane as afull symetrical airfoil. I would fly it as is and see how it goes.If it is symetrical, flipping the wing may give you your missingdihedral. Or for $40 you can get a new wing set.

Don