Cut and removed the forward triangular portion of the right skin per plans. Was a little nervous about that cut but no big deal with some snips. Filed it smooth.
Then step 4 - deburr everything. The one little step that can take hours. All of the holes that were drilled in the stiffeners and longerons get deburred. Upon inspection I actually caught a few holes that didn't get drilled on the left side. Cleco'd the left stiffeners back to the skins and drilled the few missing holes. It was just a couple so not too worried about fit up.
Deburred the edges of the big skins. And set up the countersink for all the #40 holes in the longerons. Tested on the rudder stop brace. I'll tackle the longerons next.
Step drilled the hole in the aft bottom skin for the tie down bolt.
Will come back to all the dimpling in this section after priming.
Hit the 200 hour mark.
6/9 update: deburred the two top skins that I forgot.