i have a 97 328i and for some reason, the rear deck when im driving starts CREEKING. Now I usually drive with one of my rear seats folded down (to get a fuller bass from the trunk), but the creeking is there wether the seat is up or down, just REALLY REALLY bad when it's down. It is definitely coming from the rear deck, it gets really loud whether im driving straight, over bumps, turns, basically anything that moves the car. Is there ANYONE that know what I can do about this? I guess I could just fold the seat up, but it drowns out so much bass. But even wtih the seat up u can still hear it and it is definitely noticable. someone help?