About 2 weeks ago I finally sold my newly set up Fender Am. Deluxe V on the bay. No problems evident whatsoever, and I get a real solid price for it. It took about a week for the bass to get to Mississippi, and the guy said he got it, it plays great, but he wanted to bring it to a shop to have it checked out. So be it. Now he's claiming the tech there said there was a hump between the 12th and the 15th fret on the bass and that he wants a refund. I've asked for pictures, and neither of us want this to end badly. So what's the proper course of action, chance of the neck actually being warped given that its spent most of the time in the case, and was recently re-setup and the tech made NO mention of there being warpage? I'm 99% confident that there was NOTHING wrong with this bass when I sent it out. But I have a low feedback ebay account, and a negative from fighting this could completely destroy my account.