I worked on the F711 bulkhead today. I was able to clamp and drill the bars that will be used to attach the horizontal stabilizer. These bars were then tapered at both ends. This is only done for the 7A. The last thing that I did tonight was fabricate the angle that gets riveted across the top of the bulkhead. This angle had to be cut to length, tapered on both ends, clamped in place and then match drilled to the bulkhead and horizontal stabilizer bars.
Horizontal stabilizer attach bars drilled and tapers