This is the replacement R-00910 horn brace that I messed up a few weeks ago. With the holidays it took two weeks to receive this from Van's.
The manual has you get a helper to roll back the skin so you can pop rivet the stiffeners. Tiffany worked last night and was sleeping so I figured out a way to do it solo. It actually was pretty painless and worked out well.
I remembered at the last minute that only the forward hole of the aft two gets a rivet the other hole remains empty. I'm sure it would not hurt if I had done both of them but I've seen several posts on VAF saying the aft most hole was only there to cleco.
For whatever reason I could not both L and R skins to line up properly when I had the rudder on its side. It's hard to tell in the picture but the bottom side is perfect but clearly the top isn't even close to lining up.
I ended up standing the rudder vertically and magically the skins lined up. I started in the middle of the spar and worked my way back and forth outward until it was all lined up. Next I riveted the shear clips to the spar.