Drilling on bottom skins

I have drilled the bottom wing skins on. This the last step before I can start drilling on the tank skins. Once I have drilled the tank skin on, it will be time to start pulling skins off and start the long process of deburring, dimpling and priming skins. The one thing I hate about wings is there is two. You have to do everything twice. I have made up the access cover and drilled the screw holes for that as well. I have to make sure and get the nutplates mounted before I attempt to put on the bottom skins. I had to do a little shaving of the outboard skin where the leading edge skin butt joints the bottom skin. It did not fit near the end and so I shaved it down a bit. I have also drilled the overlap of the outboard with the inboard skins. I will joggle this overlap so it is not so pronounced. The you file the edges down so they lay down nice and flat. I though about just doing a one piece bottom skin in .032 but that would be a lot of money. A 4x12 sheet is about 400 dollars now. Then there is all of the cutting and trimming to make it. Plus it's a few more pounds. A few there and here and next thing you know your plane weighs 1200lbs :).