Regardless of brand, most RV exterior compartments use the same CH751 key. Zero security. I once used my motorhome key at an RV show and opened all that I tried.
A better DIY lock is sold online with a barrel cylinder. Not foolproof. Anybody with a BIC pen can get in after watch a Youtube video. To change over all you need to know if the depth of the lock by removing and measuring what you have.
Bought a 2004 Gulfstream Crescendo 8386 but I either didn't
get a baggage door key or either the locks don't work. Are Gulfstream
class A keys interchangeable with other Gulfstreams? If not, is a
locksmith my best bet? Thanks