drilled the big holes in the 770 skins except for the one that I need to match drill to the f-715 seat ribs. you may recall that I foolishly already drilled those holes in the ribs, and then discovered that the pilot hole in the skins were off by almost 2" I called Vans and they said eaten location was okay, and I've seen quite a few people who've just drilled both. I marked inside of the skin through the hole in the and will match drill undersized when I have the skin off and then file final size to match when it's clecoed back together.

I tried to go on the cheap with a harbor freight unibit for the 1" holes, but they were just to big and through too much metal for that cheap bit to work well, so I bit the bullet and bought a $45 one from Ace that cut like butter.