Continued riveting the HS skins, finised the bottom side (internal rivets). Checked the tollerances of every single rivet driven & I'm very happy with the results!!!! One more 2-3 hour session ought to finish the HS to 100%. I'm going to have another builder come look at my handy work before I seal it up with the rear spar assembly. It never hurts to have a second set of eyes look over your work, even though I'm confident all is well and better than average. My good ol' riveting skills are coming back (finally).