Update, after watching multiple vids on the Tech Bulletin and not being able to get into the dealer for 2 weeks I purchased the Ford part on EBay for $8.02 delivered. I pulled the passenger carpet back to the seat then put a long funnel under the carpet not lifted up to lift and promote airflow, pointed a small battery powered fan at the funnels opening to cycle air under the area, put my large garage dehumidifier in the back area and ran it for 12 hours each for 3 days. I pulled 3+ gallons of water out in that time. When I shut it down last night humidity was reading 23%. Today I installed the elbow. The Bulletin states to remove the entire inner fender liner but IMO there is absolutely no reason to do so. I crawled under the truck and could see and reach the nipple easily. The clip came off in 20 seconds. What the bulletin does not mention is that there are 2 ribs under the nipple and I was afraid they would prevent a good seal so I shaved them off with an exacto knife. I put just a little silicon on the bottom of the nipple where I shaved the ribs off and pushed the elbow on tight. After cleaning the surrounding area with alcohol I installed the metal duct tape as directed. Done. Start to finish was 20 minutes which included wiggling my a$$ out from under the truck 3 times to get something. Properly prepared I could do again in 10 minutes, even less if I had put the truck on one of my lifts, but I didn’t want to move the other cars around. Taking a good look at the interior floor board I could absolutely see evidence and slight staining where water had been flowing back into the truck. With the carpet completely dry there was no residual smell, but I misted a little Free Breeze in the area anyway. Tomorrow I’ll drive for an hour to insure it’s fixed, then pop the carpet back in place. Suggestion: lift your passenger rubber mat and check for moisture. I happened to take the mat out last week when installing a dash cam, otherwise I would not have known and that water could have set there for months. I know the dealer would not have run a large dehumidifier for 36 hours, would not have shaved the ribs, or installed a touch of silicon in that area so hopefully this was a more effective fix than the dealership, and I know it’s done right. Good luck...
.