Mostly a bunch of uneventful final drilling, deburring and dimpling. The bottom forward part of the rear vertical stablizer spars need dimples on one, and countersinks on the other. I just showed here what I did first with the dimpling of the spar, and marking of the spar reinforcing piece.
The lower half of spars - my idiot proof markings again!
Count, recount, count, then dimple the right side, and holes.