About a week ago, I started to rivet the right fwd skin to the fuselage frame. I riveted the first seven rivets at the front of the top longeron behind the firewall. While these looked ok from the outside the working heads inside were horrible, as I couldn't get my bucking bar behind them properly, so they'd need to be drilled out again. I drilled them yesterday, re-clecoed the rivet holes and decided to start riveting the top longeron working toward the tail, leaving the first seven alone for now as I don't have a bucking bar that can get 'in' behind them properly yet. I called it a day as the light was fading.