Drilled out rivets attaching right flap angle 606A and plate 606B in order to rivet root rib to top flap skin. Riveted root rib to flap skin. Riveted flap angle and plate back together, using hand squeezer. Used pop-rivet tool to rivet bottom flap skin to root rib and bracket. Riveted bottom flap skin to spar and hinge. Riveted spar to ribs. Right flap complete!