Hello all,

While sanding the leading edge of the Sig 4* 40 kit, I used the Great Planes 11" Multi sander, unfortunetly while sanding I moved the orientation of the sander slightly which caused the change in airfoil.

Here are pictures of the wing ribs, the bottom of the wing has this problem.

I would like to get your ideas about fixing this problem, can I use a balsa filler with some thin CA to fix it?

Since this area will not be sheeted it will look bad under covering, looks like biten by a shark.