Using rivet gun to drive rivets for elevator attach brackets. Not as scary as it first seemed. Had to drill out 4 rivets - bunged up factory head. One really needed replaced, 2 others not as bad, and one just ugly. replaced 4 more - did not like how they looked. Had to redo even one of these - rivet gun head slipped - again. All look good now. Touched up primer in places where bare metal was showing.