When I next go to the motorhome I will have a good look for a hidden heat shield.Ours has a heat shield, it was fairly well tucked away at the top though, and I've never come across one without a heat shield so I suspect it was missed when the grill was originally made. Stuff like this does happen even by the builders of MHs/PVCs themselves - Globecar built our previous Familyscout with no support frame under the shower tray so it cracked, they would not believe me that it didn't have the framework until the dealer came to fix it and confirmed my findings. I have heard of at 2 others of a similar age that had the same issue so it looks like the production monkey didn't get enough peanuts that year!