After I riveted on the end ribs, I realized I had not dimpled the fastener holes under the ribs on the forward edge of the skin. I drilled out several rivets on each side that allowed me enough room to use the squeezer to finish dimpleing those holes.
Once the dimpling was complete I back riveted all of drilled out locations and reassembled the RH aileron.
I hate missing a step and undoing some of my work to fix it
