I have sealed the sunroof carefully with clear silicon sealant while I await a needed seal . I thought sealing the sunrrof would fix this but still the heavy leak remains... plz help! After letting the car sit in the rain when I get in and go and am goingdownhill all this water runs out and onto my left leg from above in the roof, right through the roof liner at the side of the sunshade... I am thinking drain tubes but have no manual. It is a 300TD - can someone tell me where I can locate the drain tubes and if this may be the culprit ??? TIA...