seattle

Hello, Does anyone know why the rear window cassette on my 04 Pluriel fills with water? and what the fix might be. I'd like to try to fix it myself if possible. It's a great little car, great fun, but it has this one leak in to the rear window cassette which then drips into the wheel well. Also, the brakes grate a lot, like a metal on metal grating sound. There's plenty of wear left on the pads though and I can't see anything else rubbing? Thanks Dave