I finished match drilling the P4 hinge to the upper side of the left wing. Removed the P4 hinge piece from the top and bottom of the wing skin, then deburred all holes in the hinges as well as the wing skin. The resin had cured on the holes I had filled on the right fiberglass tip—seemed to take longer than usual, maybe the cool weather. Anyhow, I sanded down the inside of the tip where the resin was “humped up” over the holes. The outside had been taped, so only took a very light sanding. Now I’m ready to position and re-drill the tip and hopefully eliminate the mis-match with aileron.