It was a huge day today; I back drilled all the main ribs and nose ribs and then removed them, deburred all the ribs, drilled the hole for the wiring conduit in each rib and deburred. Then cleaned all the ribs with thinners before applying etch primer. Once the primer was dry I reassembled the spar and riveted the first 4 ribs that comprise the wing walk. More riveting to come tomorrow. I probably didn't need to level the spar until the riveting is finished, never mind it won't hurt anything.
Ribs back on the spar after etch priming
And another view, note the bow, I have not leveled the spar as yet