Hi folks, I've just gone through 3 27" Thunderbolt Displays and have had to send two of them back and have requested to send the third one back too. They all seemed to be attached to the stand at a very slight angle, but on something this big even if it's only at a small angle it becomes immediately noticeable. There seemed to be about 0.3cm difference in height between the left hand side of the screen and the right hand side. The stand was sitting perfectly flat on my desk, and I also tried I putting it on different surfaces just to make sure it wasn't my desk at fault, but it does seem to be an issue with the display. Has anyone else ever experienced this?