My original 2tb Seagate drive apparently bit the dust recently. Bought a 3tb WD Red WD30EFRX assuming it would be relatively plug and play. Found out the 3 rubber pads (two in the top of the TC, then the rubber pad which seals the bottom) don't fit. They conform to the Seagate drive, which has several kinks in it possibly to make it harder to swap drives. Anyway, 30 minutes of very tedious cutting and testing with a knife eventually got the rubber grommets down to a size where the WD drive could be forced into the TC. I can't say that the bottom of the TC seals perfectly at the moment, but I suppose with some additional cutting I probably could have gotten it down to size. Either way, just a warning.

I have a few pictures of what I did, but don't know how to add them. Anyone who knows, let me know.