Just had mine replaced, due to accident, after the replacement it does not go to the 'comfort stop' it always opens all of the way. I have calibrated it, the dealer has done the same, it refuses.
I also have noticed that when just starting the car, if I have the roof vented, if I try to do anything for the first minute after starting it will close and then open again. Very odd.
Many say close it and not to use it, I cannot and will not do this, as it was one of the things that I must have. It was very nice to get a new cassette, but the way I got it I would have rather had paid for it myself or had it done under warranty.