Riveted in 910 plates and platenuts onto the spar. Riveted the 903 and 904 Ribs together. Riveted the counterbalance skin onto the rib assembly, leaving the last 6 holes on each side that mate with the skin open. Riveted the spar assembly and the 605 horn together. My new longeron yoke came in yesterday - great timing. This thing is awesome. I highly recommend one of these.