Mix a big batch of 15 minute epoxy. Bend the wing enough to open the crack and slather in the pox. Brace it straight, wipe off the squeezed-out epoxy, and let dry. If it is balsa sheeted, cut the balsa back at an angle on bot hsides of the break, and insert a scarf piece, again using epoxy (most CA melts foam). Use spackling or Model Magic Filler to repair any dents in the foam. Dr.1 Driver "There's a Hun in the sun!"