I bought a new bass today off some girl (who never really played it). It's a Jay Turser, looks fairly unplayed and new. I noticed that the action was way too low, so I looked up how to fix action and intonation, but although the intonation is perfect I can't raise the strings enough and I'm getting fret buzz, especially at the second fret. Can anyone help me out? PS, theres no opening to get to the truss rod so I hope it isnt that.