I started to roll the leading edges of the left elevator, but that task really, really sucks, and it's far harder with only 1 person. So I decided to wait until tomorrow when my wife can help.
So I started on the horizontal stab, which starts with the main spar.
Lots of prep/finish work on the long reinforcing elements. All the edges need to have the milling marks removed (no small amount of ScotchBrite wheel required), and the edges that lie against the spar channel need to get rounded to fit flush.