Never had a problem until this year. After heavy rains the convertible roof leaks from the front and sides and it's horrible if I open the roof - it floods the car. The water does not leak if the car is not moving (with the roof up) but as soon as I turn left or right, water floods in from the opposite turn side. I'm 85 miles from the closest Saab dealer. I know Mazda's had a roof drain problem but how do I find and clean a Saab's convertible roof drainage system?