Well, my MS with ~1300 miles on it has had its first issue. Apparently there's something up with sliding mechanism for the pano roof, which results in a "chattering" as it opens and closes. It won't do it for the entire length, however there are very specific spots where I see it happen (near the 75% open "comfort" position for one). The noise is best described as old windshield wipers on a dry windshield (only slower) and you can definitely see the entire mechanism vibrate ever so slightly as this "dry rubbing" noise occurs. If I had to guess it's probably a simple lubrication issue, however given that the car is brand new I'm going to get the service department handle this. I've already made my appointment. In any case, I was wondering if this was a known issue or if I was just lucky?