Trimmed off small area of HS right bottom skin where it overlays the splice angle, HS-614. Clecoed right HS skin onto skeleton. Riveted top of right HS skin onto forward spar and inboard (HS-405) and center (HS-608) ribs, using 3X gun and Avery rivet set with rubber guard. Using the pneumatic squeezer, riveted skin onto rear spar and most of tip rib. Riveted top of left HS skin onto forward spar and center (HS-608) rib using 3X gun and Avery set.