Spent the evening prepping the side skins. Since I'm working the panels as I need to install them I have to clear off the protective film, deburr all the edges...paying close attention to rounding and smoothing the exposed edges, then reaming all the holes and deburring all those holes on both sides. It takes a while but it should make the riveting installation easier. Once everything is primed I'm ready to start putting things together again. It's really coming together now.