PLEASE HELP, Rattles ugh !!!

[Nips]

I just had the sunroof replaced on my wife's H3 last week due to broken plastic stop that was rattling. It lasted only about 3 miles after picking up from the dealer before the rattle came back. Took it back to dealer and they pulled the liner to find the new sunroof was already broken. They contacted GM who told them to look for broken tack welds. They found one that had broke loose and are in the process of welding it back up. This is the second '08 they have replaced the sunroof on but the first with the broken tack weld. This rattle was coming from right above the rear seats in the middle. The shop was locked up when I picked up the rental so I didn't get a chance to take a pic.