OK ... here's my fix for those squeaks from the pano roof...
I bought this: http://www.amazon.com/dp/B004B8GTQG/ref=pe_175190_21431760_M3T1_ST1_dp_1
The problem area is this seal noted with the yellow areas. It's a very hard seal and you can almost duplicate the sound rubbing your finger across it ....
Cleaned the seal all around the pano roof and applied the product ....
Gave her a nice test ride and got complete silence back.
Cannot speak for how long it will last, but it's much better than making a trip for another temporary fix from the SC .....
Well, the magic german goop didn't work for me. I've since taken the thing apart a couple of times...I now know where the noise is coming from, but it's from what would appear to be the structural brace, which I don't want to touch (nor does it look easy to remove). For those that were wondering, here's some photo's of the other bits that do come out easy:
This is the cover. You'll see the 4 pop-clips running along the center line. to remove the cover, just grasp with 2 hands (one hand each side) and pull down. It removes very easily.
Next comes the brace that the cover fixes too. There's no way this is structural, since it's held in place by a couple of Phillips screws, and a torx screw in the middle. remove those 3 screws, and the brace can be shimmied out.
Finally, this last picture shows the shims the SC previously fitted. this also still appears to be the source of the noise. I took the car for a drive without the other 2 pieces fitted, and the noise was still there. Pushing in the general area of the end brackets reproduces the noise, though in reality the noise is caused when the car is flexing.
So, back to the SC it goes, not sure when, I really don't want to mess with a crappy rental car again.
The other interesting thing is that the bulky bits (the removable brace and plastic cover) appear to serve no useful purpose, at this stage, anyway. They're very oversized, presumably for the option of replacing with rollout covers at some point. Either way, it's s shame it's there, seems like an after thought.
Note: if you do decide to remove these pieces, they do have a front and back, even though they appear to be a relatively uniform shape. Be sure to mark the front of each as you remove them.