Am I overlooking something in the last picture? Because I don't see any duplicates.
(Btw, if you add width=800 inside your [ img ] tag, it will reduce the image to a more manageable size.)
Your settings look fine, but what happens if you tick "delete tracks not on the auto-sync list"? That should ensure that only one copy of each track is on the device. (If you did't check that, and you changed settings between syncs, that might be why you're getting duplicates.)