I'd sent my XT1 in a few weeks ago for the light leak fix and when I got it back, it had dust or possibly scratches on the sensor that was imperious to any cleaning method I tried. I assumed it was dust between the glass and sensor, but it could have been a couple of scratches. But they were large enough to clearly see with a sensor loupe and it showed up on any shots with sky in that part of the sensor. And they definitely hadn't been there BEFORE I sent it in.
So I called Fuji USA, they said send it back in and they'd expedite it for me. They got it last Thursday morning (pretty early according to Fed Ex) and by Thursday evening I had a notice that it had shipped back out to me. I got it this morning and damned if they didn't send me a new (or perhaps fully refurbished?) XT1... In addition to a clean sensor, it also has much more workable buttons on the back of the camera (not to the level of the XE2, but notably better) and I can actually work the exposure comp dial with just my thumb, which I absolutely could not do with the first copy.
The quality control problems are a drag, but I'm again impressed with Fuji's customer service. I've dealt with them before and they've always been great and this is certainly no exception. Unfortunately, they seem to NEED to be pretty often. I lost the soft release (adhesive type) and screen protector I had on the one I sent them, but I got a new camera with a much higher serial number.
I hope this one works out!
-Ray