I searched for a month and saw nothing, however, I didnt know what to look for. I guess after a little scraping aroung, the body guy found this soft area by the drain hole. I surmise that the drain was simply pouring straight into the inside of the car onto the floor from behind the firewall. This was in the driver side also. The puddle would always form in the back seat area before filling up and spreading to the front seat area.