Ive had the hose on it today and at first it seemed dry, then as soon as I drove the car, the rear footwell filled with water yet again. I've put two holes in rear sill for water to drain so why is it still getting in? Is it possible sills are still filling up, then when I drive the water collected in the sill gets gushed around and fills footwell? This is by far the most annoying problem I've experienced with a car...