I took my bass (a mint condition jack casady) to the repair guy to get a setup. He set the action low, but in doing this, he shaved the nut where the strings lay. Now my E string rattles when I hit it at medium force. I'm not even banging on it that hard, I never play that way, but it still rattles the string against the frets! What are my rights? Is replacing the nut expensive or possible? Will it ruin the sound quality of the bass if the nut is replaced? AAAAAAAAARRRRRRRRGGGGGGGHHHH. I took the bass back to him thinking that if I adjusted the action, the bass would be alright. He did this, but when I went home again to give it a real test, it still did it. That's when I realized! Is he responsible for covering the costs of replacing the nut? Help please!