You can drill out the mount holes in the wing to 1/4" or 3/8" whichever is closest. Glue in a dowel in the hole you drilled. Then you can set up the wing square and drill new holes. You can take 2 nylon bolts and carefully put a point on them. Be sure the point is centered on the bolt. Thread them in backwards so the points face the wing. You align up the wing and press the wing down on the points to mark the wing for where the new holes go. Good luck with it.

Mark Shuman