Just started smelling a damp smell in the car and then a water stain showed up on the headliner by the driver side rear door. We think the door seal is the problem and under the rear seat is soaked. How do we get the water stain on the headliner out without ruining it? And the smell? It really stinks in the car now. It is a beautiful car and in excellent condition and I just want it to stay that way. Any suggestions? Thanks in advance.