The F-711 is a double bulkhead. The front half is F-711A and the back half is F-711B. The protruding F-711C bars will attach to the horizontal stabilizer. The F-711C bars are tapered for the RV-7A.
I marked the centerline of the F-711C bars and clecoed the F-711A&B bulkheads together, using the holes that were not common with the bars. I then clamped the bars against the F-711A forward bulkhead, with the lines showing in all the pre-punched holes, and then drilled them using the prepunched holes as a guide.
Both F-711 Bulkheads had the upper portions trimmed away to allow the elevator pushrod to pass through. I trimmed them to the marks on the bulkheads.
Time: 2 hours