Received my Tail Cone section on 3/28, laid out the parts, orientated the upper and lower longerons, as per the plans. Drilled #40 and clecoed the skin to the lower longerons, then the upper longerons. Built the #1 thru #3 bulkhead structures, and clecoed everything together. Updrilled #31 the lower longerons. Turned the fuse over, and drilled #40 for the bottom skin. Put in the stiffeners for the side and bottom skins. Updrilled #31 the bottom skin to the lower longerons, and clecoed.