I started flush riveting the wingwalk area of the right wing tonight. The wing spar was clamped down to my worktables and I stood on top of a stepstool, reaching down over the aft of the wing to buck with one hand and holding the rivet gun in the other. For the wingwalk areas closest to the inboard edge of the wing, I could stand on the floor and reach around from the side. There was one rivet in the wingwalk that refused to go in straight, even after upsizing to an oops rivet, so I ended up just installing a flush CS4-4 blind rivet there. Most of the others in the wingwalk went in without too many problems. However, there are limits to how far this position can work due to arm length, and so I was left the rivets that are closest to the spar mostly unriveted for now. Although I was able to rivet the left wing by myself a few months ago by rotating the wing on its side and reaching around the spar, that was some challenging work, so I will be inviting some friends over tomorrow to introduce them to team riveting.