Completed drilling the main and rear spar holes into the top and bottom skins. Decided the that the only way I could install the leading edge skins is to rotate the wings 180 degrees so the leading edges are pointing up. Had to remove the middle section of the skins in order to have something to grip on to = yes, it would have been easier to do with an extra set of hands. The leading edge skins aren't pre-drilled - I have to determine the proper placement and match drill the holes that are in the side skins to the leading edge skins. This wasn't easy, but I managed to get the skins cleco'ed on the top of the wing. I'll work on the bottom holes next.