I just purchased a 1999 Eurovan and I noticed (do to rain) that the sunroof leaks. Water leaks from around/through the front dome light that also houses the open/close switch. I have visually watched the sunroof close from the outside and the seals don't seem to be compromised, no cracks, tears etc. Is this a known problem for the van or am I just out of luck? Any suggestions would be great.