I shipped a perfect X5D thru FedEx and had to have it returned to me for repair. Before i called FedEx, I checked the inside of the board. It was an unseated sisterboard. 12 screws and 15 minutes later it was fixed. I sent it back to the buyer the same day it arrived.

The morale of the story... FedEx screws up too
AND
...a little inspection can sometimes find an easy-to-fix problem. I say - GO FOR IT!