Finally got around to securing the fuselage stringers to the vertical stabilizer post. As I was doing so, one stringer in particular kept on breaking at the scarf joint, so I decided to double up all the stringer scarf joints with 1/16"" ply top and bottom.
All stringers were secured with .063 aluminum plates holding opposite sides together using 3/16"" bolts. I used 3/32"" plywood on the top of the stringers at the locations of the aluminum plates and large washer on the bottom to make sure the mahogany
stringers weren't damaged. Some of them were fabricated out of rather hard mahogany which requires quite a bit of persuasion pulling them to the tail post.