80 rivets later the aft stab skins are attached and it's time to attach the stab horns.
One of the bolt holes on the lower horn did not line up perfectly with the nut plate inside the spar box so I had to elongate one hole slightly in order to get the bolt in the nut plate without risking a cross-threaded bolt. Really hated to mar the powder coat finish on the steel stab horns but it was necessary since moving the nut plate was out of the question. I think it will be okay. I'm probably not the first one who's done this. If I had a do-over I would have taken much better care to center the nut plates for the horn bolts exactly before the spar box is riveted together.
The stab counterweight arm is put back on temporarily in order to attach lead counterweights, which I'll do tonight.