The first task completed was to add nut plates to the front tooling holes on the counterbalance horns. It's not per print, but other builders have done this because it's an easy place to add washers after the fact if you need to add weight up front to rebalance after paint.

After that, I set the heim joints to 13/16" per print, which resulted in the counterbalance horn gap growing from 1/8" near the hinge line to about 3/16" at the tips. This is consistent on both sides and I I could fix it by backing out the inbd heim joints to the max allowable 7/8". I toyed with the idea of doing that for aesthetic reasons, but input from VAF pointed out that if they weren't both more or less the same, it would make the control horns not be in the same plane when they rotate. The general sentiment was that it's better to have everything as in plane and friction free as possible rather than try to tweak for a tiny gap variance. This seems like good advice, so I set all the heim joints to 13/16" and moved on.

Checked for binding, range of motion, etc and everything looked good so I pulled one elevator and then went ahead and drilled the control horns on the other one for the AN4 bolt that goes through the center bearing. The bushing I used to center the drill bit was a simple aluminum 1/4" bushing that I got at ace hardware for about a dollar. Even though the bushing was supposed to be 1/4", it was microscopically bigger than the bearing, so I chucked it up in my drill press and used some 2000 grit sandpaper to turn it down until it was a slide in fit. I slathered on some Boelube, held the bushing so it wouldn't spin the bearing, and went to town. After drilling with the bushing, I pulled the elevator and sized the hole up for a AN4 with my electric drill because I can control the speed a little better that I can with my air drill. Pulled that elevator, installed the other one, and repeated. Everything worked fine, the bolt slides right in, and at this point I'm calling the elevators done except for torquing down the jamb nuts and fiberglass work.