I removed the right wing from the jig, removed the top skins, and placed clecos in the forward face of the main spar. I then placed two thick peices of wood long enough to stand the wing on and turned the wing main spar front face down on them. I then countersank the remaining rivet holes on both the upper and lower faces of the spar. I dimpled all rib/skin rivet holes upper and lower surfaces, and did the same on the rear spar.
