I think the seams are gonna rust now. The caulk gets cracked and you cant
see it. Water will get in and start the process.Sorry. This is why you see
so many vanagons with rust in the rear seams. In a parking lot the end cap
gets tapped, and pushes against the metal right at the seam.The caulk
flexes and cracks.Better find a way to convince the insurance company that
damage was done there.Very fragile bumpers on a vanagon for this reason.