Started the assembly of the vertical stabilizer. Made a big mistake. I assembled the front spar root attach plate backwards! The angle should kick backward not forward. Unfortunately did not notice this until I drilled the plate, spar, both ribs and clips to full size. I said "hum - look at that" or something to that effect. How could I make such a mistake - I don't know. I'll look at how to fix it tomorrow.
Vertical Stabiliser frame components
Vertical Stabiliser Fron Spar showing backward plate at base of spar