Just a tip for those getting ready to mount their tail:
When mounting the horizontal stabilizer, there's a critical measurement that must be made before drilling the holes for the attach bolts. It's impossible to fit a ruler in in the small space in front of the spar, and even if you could, you probably wouldn't be able to read it.
I made this gauge from a scrap piece of a stiffener in order to transfer the required 15/32" dimension to the lower spar cap.