there are so many steps to take to get these forward covers in that it took me all day. it was a fun day in the shop, i should take more leave so i can get lots more done. the little kick guards on the front side of the spar took more time then anything else. lots of on and off to get the fit right. i'm still looking for the right size pop rivet for the side braces. should have riveted them on before the side skins went on, but who knew??