My dealer checked out my motor and reckoned that the reason the water was coming in was because I went out in the rain!
He pointed out none of the Civics have any devices for removing any rain water from the rear screen so therefore it is not advisable to go out when it is, or is going too, rain.
......don't need Rain-ex either that way!
"If you shoot a mime would you use a silencer?"
Charles H.