Cut down 4 470-4-7 rivets to 6.5. Used 2 and riveted .063" bracket to both 0.125" brackets. Cut down 6 470-4-6 rivets to 5.5 and riveted .125" bracket to rib. Riveted .063" bracket to rib. Positioned 2 0.125" brackets and .063" bracket on W-411L rib for left wing aileron bellcrank. Drilled brackets to rib. Drilled pilot hole thru 0.125" brackets and ten drilled holes to 1/4." Found that these holes were angled slightly.
