Had to take a little break to cover some work related tasks. Anyway, I'm back at it. Tonight, I final drilled #40 all the holes common to the Left/Right Skins and the Trailing Edge. The plans have you start drilling in the middle of the span and work toward the ends. The holes common to the Skins and flanges of the R-903 Tip Rib and R-912 Counterbalance Rib were then final drilled to #40. Lastly, I match drilled the hole in the forward flange of the R-00901-L-1 Skin into the R-00901-R-1 Skin. It doesn't sound like a lot of work, but foward progress was achieved.