Got my XT from Sidewinder today as well - at first inspection it looks fine. Opened her up, only a single bent pin - and it's not even bent, just doesn't stand straight. You really only hear the people with problem speaking up, those with good blocks just go about their business.

However, I really wouldn't be too concerned. If there is a problem it will get fixed immediately by Swiftech, they're great (this is opposed to other companies with terrible support, in which case you'd be screwed -- but it's not!).