These answers are based on a careful reading of the plans and inspection of Jim Cone's photos. I not building - just reading and re-reading the plans and looking at Jim's great photos.
If you look closely at the plans they show rivet direction in several places. They also specify rivet type. Going through and highlighting when the rivets are not of the pulled low profile type (LP's) could possibly avoid a major headache. This is especially true in the forward sub spars, rear main spars, control brackets, and nut plates, where solid rivets are used. Pay special attention to pages 14-02 and 14-03.
The right and left wings are different in several aspects to accommodate the left spar being in front of the right and yet having the leading and trailing edges line up. That is why the W-1210 brackets are different, and the trim call outs on the ribs are different for the two wings.
It would be nice if someone now building would post some photos of where the nose and main ribs meet the spar and the reinforcement joggle / front edge of the rear top skins.
Anyone building near Pensacola, FL or Fort Rucker, AL?
Hoped this helped. -Dave