Removed the 4 bolts for the R/H wing spar inboard bracket by the #1 nose rib. Removed the bracket so I have room to rivet the nose rib, L angle, and slat support angle. Installed those parts with A5 rivets. Installed the bracket and bolts that were removed from the spar. Torqued the bolt to 20 in. lbs. Torqued the 8 bolts that attach the nose ribs 4,5,6,7,8 to the spar to 20 in. lbs. Rivet the slat support angles on ribs 4,7,8 with A5 rivets. Cleco and rivet the tank Z angles, SD75W9-2 and 3 shorter trailing edge ribs to the aux rear spar, SD75W3-4, with A5 rivets. Cleco and rivet the aux rear spar to the side of the tank ribs with A5 rivets. Cleco the rear spar parts together to figure out how it goes. Drilled the 3 holes on each of the rear ribs where the rear spar attaches to a #21. They only had pilot holes.