That's no fun. I believe that the unchipped lenses can only be adjusted at the lens. The links on this site for BHphoto have the new chipped 14mm for 299 dollars.
Good price, but be careful. How easy are returns with Buydig Ebay? I've seen 3 copies of this lens with some sort of focusing problem. B&H is $25 more, but returns are easy.
Returns are easy on eBay if the transaction is eligible under their buyer protection policy. Most genuine sellers who value their reputation and feedback rating are also willing to accept returns......