That bites. I’m sorry for you. And from my own experience returning for sharpening is a royal , long turnaround times...post office....blah, blah blah. An exchange (in my case...no pun intended) was equally time consuming and in your case with a special Bose, an exchange will yield a different one-of-a-kind specimen. But at the end of the day, the onus falls back on Case and this shouldnt be happening on a premium, and iconic product.