Mystery Damage to my truck. From the camper??

Our camper is hardly ever on the truck completely straight, with the camper centerline being right on top of the truck centerline. Depending on where you load, it can be very difficult to back under the camper in an absolutely straight and center line, and usually being off an inch or so does not create a problem. At some point, it is just "good enough".
Even in the video you can see there are three fingers distance on the driver side and two fingers on the passenger side, indicating that the front of the camper is slightly off center.