I keep getting hard drive disconnects. I have an Apple Firewire800 to TB adapter. It's not my Firewire cord, I've replaced that already. It occurs on BOTH TB ports and has occurred by simply rotating the iMac. When I jiggle the connector at the TB port it disconnects, the first port with very little movement and the second port took a number of jiggles and felt a bit tighter. What do you think? The adapter is almost 2 years old and is unplugged/replugged once every week or two.