W07 Wing Box - Right Hand Wing - Turned the wing over so the bottom was facing up. Ran the poly tubing through the enlarged tool holes in the forward ribs. This will be used as a conduit for the wires for the wing tip lights. I then used the ratchet straps to pull the forward skin so the main spar holes would line up. Clecoed the main spar holes of the forward skin. I started drilling the #40 pilot holes from the main spar out toward the leading edge.

Click on a link to view the video: