On the topic of motorhome hubcaps, or "simulators" as I've seen them called... what's the deal with those things falling off? As I've been shopping for mid- to late-80's Class C's, I have seen more advertised motorhomes than I can count that only have 3 out of 4 caps. It seems like many of them are missing the cap on a rear dually. Is there some flaw that makes them prone to falling off while moving? It seems like such a strange but repeating trend that I thought it was worth asking. If I do buy a MH with nice stainless caps, I'd like to make sure they stay securely attached!