Thanks. It turns out I was missing a couple locations in Southern Shelf - Bay and the Moonshiner's Shack in The Dust.
As of 4/28/14 my Borderlands 2 trading post is officially closed. I am no longer boosting, trading, farming, etc on the Xbox360. I am entirely on the Xbox One now. If you want to play Xbox One with me, send a friend request with a message
to GT zI Drucifer Iz (those are capital I's).