After you glue the new tail feathers on, run some weed eater line around for braces. It's light, it's scale (for WW I) and you might not get a really good glue joint. Drill holes in the stab and fin tips and run the line around in a big circle. You can drill through the lower fueslage or clamp the line under a screw head on the bottom. Fix it with a little thick CA or Goop.