Attached wing tip extension to main spar and mounted #9 rear rib. Also working on both rear spar channels. One is drilled out with numerous upgrade doublers and the other is ready to be drilled out. All the upgrade doublers had all the holes already drilled to final size so putting rear channel together goes fairly fast. Tomorrow will drill out other rear spar channel, debur both channels and hoprfully get to rivet both of them!
