Measured and drilled spar tip. Didn't like how close the drill holes are through the rear rib flange (on the bend side of the flange) where it butts up against the spar tip. Therefore I drilled a second row further out just to be complete. Probably wasn't going to be a problem, but now it's just a really really well secured rib, lol. Measured and drilled the front rib (for rib #7) spar web using the rivet spacer.