I haven't tried to do anything to it yet, but I've never made any real adjustments to a bass myself. The action's a bit high, so I was going to bring it to my friendly Chicago repair shop for a setup anyway.
I'm hoping someone who knows about this stuff can tell me how big a deal this is, and if I should take it up with the seller (who operates a real guitar store, just nowhere near me). Even if it requires some investment to fix, the price was really good.
I think the nut is a bit higher on the E-string side, but you can still see the twist in this pic.

