Greetings: I have a 98 740i with 60K. I have recently noticed the glass in the sunroof makes a creaking sound under normal road vibration. If I push up on the glass slightly, the creaking stops. It sounds as if the glass is rubbing slightly against the frame or has become loose in the frame. I haven't noticed any leakage during rain but I'm sure this condition will only worsten. Any similar experiences? Ideas about re-sealing or re-installing the glass?