Left wing and rear mid spar

Drilled and riveted in the left side angle bracket that were wrong, and riveted on the rear spar.

Then I remembered I have one more spar, the rear mid spar. Drilling, deburring and started stacking. The outer spars are going to slide into the mid spar. It will be interesting to see how that works out when Sonex had no measurements to give out when the brackets had to change.