I'm very familiar with water entering the front from a blocked cowl drain. Because of that, I've always made an effort to keep the drain clear and, thankfully, I've had no water in the passengers front. What I do have, though, is water in the passenger side rear. The carpet is damp, but the pad is soaked. I know this can be a problem with convertibles, but mine is a coupe. I pulled the plugs on the passenger side door and they seem dry. Does anyone have any idea where it could be coming from?