I washed the underside of my 2018 JKU a week or so ago. When pulling up the mat on the passenger side to install the Rugged Ridge mat I noticed moisture in the carpet. I peeled the carpet back and it was pretty wet. The paint was clean with no rust leading me to believe it had not happened in the past. The floor..... what I assume are drain plugs were all in, but still makes me wonder where it came from. However, I did get pretty aggressive with the wand at the car wash underneath it. Any thoughts? Thanks