Are you sure you're installing it right? google youtube soft top installation vids, there are a bunch. It sounds like you aren't anchoring it properly in the rear, if it's wet behind the seats. There are clips and flaps that need to be placed properly to keep out water. Worst I've had with my '01 are fifty cent size places where the rear window zips to the top, and the wind blew rain in.... Make sure you're securing the drip rails in the channels of the door surrounds properly too. Is it a factory top or aftermarket?