It was too cold to prime outside this evening so we got the leading edge ribs riveted to the spar. Reva bucked where she could see and I shot the rivets. The ones that had to bucked in the blind, I bucked and she shot them. I still put pop rivets in two ribs that neither of us were comfortable with. I figured good pop rivets were better than tipping solid rivets or having to drill out bad ones. We then riveted the spar line on the top of the wing.