Our outboard flap closeout on starboard wing was not flat. It also allowed the flap to come too close to aileron for my liking.
Thus decided to fill a little bit. Top was OK and progressed where it needed more fill down lower.
Scuff sanded and stuck in place a .032" G-10 spacer to use as a guide for spackle knife, spackled and removed guide.
Y9-07-13