This lamp is either Used, or tampered with. There are 3 issues. Diagram does not accurately match assembly on bottom plate. As is, the lamp shade is not adjustable as there is anon-matching screw that refused to budge so the shades angled. The light is thrown into the room.  I am going to have to hire someone with power tools to get the screw out and then likely position the lampshade angle permanently. 50% refund requested.