Took about 1/2 hour to install the new F22-05 angle part to the shear web assembly. Spent about 1 hour setting up the bottom skin on the 2 inverted side panels for drilling - clamped a few of the cross braces inside temporarily to keep the bottom skin from sagging, set the width of the aft fuselage tail cone. Spent about 1/2 hour drilling the bottom skin to the side panel lower longerons.