Already checked the AC drain and that was fine, not to mention I haven't been using it. Next I fished weed-eater line down the two front drain holes of the moonroof. That still didn't solve it. Next I put a tarp over the vehicle and, next rain, it still didn't solve it, though it may have reduced it. So it should have anything to do with the moon roof. It is only the floor that is affected and it begins in the front passenger side, and in a well behind the front passenger seat where the se