I've got some issues with my car (2004 c230 coupe) vibrating in a couple areas. The first one occurs when bass hits in the photo link below. The speakers were just replaced, so I know that is not the issue. The area inside the maroon lining is where I hear the vibrating from and it goes away when I put pressure on all parts. Are there any screws that could be loose or could anything be broken to cause this?

http://good-times.webshots.com/photo...ost=good-times


The second area is on my sunroof. The video below demonstrates the kind of "vrrrrrrrrr" sound I get when I am driving between 45 and 60 mph. I think it is coming from the piece in that flips up in the front when the roof goes back because when I hold it down slightly, the sound goes away. Perhaps this is another case of a screw loose? I just have no idea where to look and what to look for. I hope you guys can lend me a hand with this. Thanks.

http://www.youtube.com/watch?v=UiW8s_jRNoQ[/align]