After rummaging through my tool box, I determined that I don't have a bucking bar that would fit behind the nutplates in the F-715 ribs, so I drilled those 6 nutplates off and shot the associated rivets solo by holding the bucking bar through the aileron pushrod hole. I'll need some help to reach the rest of those. Speaking of, Kriya spend a couple of hours shooting rivets this afternoon while I bucked. and we knocked out about 70% or so of the #3 rivets on both sides. I also managed to smack my head pretty good and cut my scalp bad enough that I needed a band-aid. Drat!