Maxxair (00-933066) White Vent Cover
A few months later we were on a trip and we stopped at a rest area to do what people do when they stop at a rest area. While walking back to our rig I noticed 1 of the vents was not sitting right. Upon further inspection I discovered that a couple of the clips that attach the cover to the vent had come loose, and I actually had lost one of the clips. I removed the cover totally so we could continue our trip, (with the vent closed). I figured I must not have had the screws tight and it vibrated loose; I'm sure there is a lot of movement while driving down the highway. Fortunately, I was able to purchase the Maxxair (00-225000) Roof Vent Zero Leak Mounting Kit without buying the vent cover.
I decided to reinstall the 2 vent covers using lock nuts as well as the lock washers to prevent the incident from happening again. Overkill? Maybe, but I'm all about overkill.