clutch rattling noise anyone?
 

Hi,

I just got an 06 Cayman S and when I let go of the clutch it makes metal rattling noise from underneath the car. The noise is gone when siwtching gears at higher speed, it only happens in take-offs, especially on the uphill when the engine almost stalls. It seems to me that it is some kinda noise coming from the heat shield, I am not positive tho, could anyone shed a light on me? Any help would be highly appreciated, Thanks.

Charles