I have been putting this off for a long time. Well today was the day. I looked at a bunch of youtube vids. Several years ago, my windshield was leaking and it was on the passengers floor, but some flowable silicone, and that issue was solved. So in time, the leak returned, but I could tell it wasnt coming from the windshield. So like a dumb ass, I figured it was coming from the cawl. Well it was, but not from where I thought. I removed the metal cover plate, and looked at the AC- heater blower motor vent. It all looked good. Still sealed with the OE sealer. Checked things with a water hose, and after looking over everything, I figured out that all it was, was a missing screw that holds down the plastic cawl cover. The screw is rite over the AC-heater blower. Without a screw there, water was able to poor rite into the blower motor box, and drain down on the passengers floorboard. So a new screw, some silicone on that screw to make sure it cant leak, and the other screw that also lines up with the blower motor vent box, and thia should solve the issue. My first mistake, was to not check everything with a water hose first. I could have just gotten a new screw, put some silicone on it, and install it. Hope this saves someone else a wasted afternoon.