My '78 280 CE drips water from underneath the dash on both sides. The water trickles down the side panels, drips off the hood release lever and onto the parking brake. If the car has been parked during a downpour, the floorboard on the front passenger side gets a saucer-sized wet spot. I never use the A/C so that can't be the problem. Cracked windshield seal perhaps? Dirty holes ( ) ? Any suggestions?