[barkinfool]

Agreed, in my case this came from tear in back right drain tray under rear roof that had ripped. Top still unwound, but there was a rip and leak. Water can leak via rip or clogged drains. Do not ignore, take action to reduce water inflow. It often comes behind the vertical rear wall and runs down into the carpet. If you feel below the carpet on the passenger floorboard you might find the result. Do not ignore. I bought new part but others have repaired the drain tray.