I had the same problem with my left wing and I lamiated a 1\16" piece of balsa to the center part and then used a flat sanding board to even it all out. Then I spread CA all over it to harden it. Speaking of the SE I am going to put the rubber band over the wing hooks per the instructions, but I then am going to put a nylon tie-wrap around that, in case of a band falure. My SE has a YS 63 in it, Will the wings hold????, As soon as it warms up here in NJ and the wind dies down we will see.