Carefully cut the covering along the corner of the broken stringer length wise, root to tip. Gently peel from the wood, use pin, exacto knife blade tip to push, pull, move pieces back to proper position. Use thin zap to glue them back but make sure the fumes can get out so it does not fog the covering. Glue piece of balsa under broken piece. When you are done with the surgery, get the covering back as close as you can, then use good quality clear packing tape to cover the open seam. I have even used the tape to give me enough room to pull the covering so it touches and the seam is almost gone.

Another idea is to make another trim color to cover the area and put it on both wings?


Buzz/