Replacing compartment locks
Have you tried consulting a local locksmith? I had good luck in having the cylinders rebuilt on my '64 Overlander at my local locksmith. He was able to restore one and match the others to the restored lock. The locksmith I chose specialized in automotive as well as household locks, and was located in a college town so he was familiar with materials used in RVs and mobile housing.
Good luck locating someone capable of rebuilding/replacing the cylinders in your compartment locks.
Kevin D. Allen
WBCCI (Lifetime Member)/VAC/Free Wheelers #6359
1964 Overlander International/1999 GMC K2500 Suburban (7400 VORTEC/4.11 Differentials)
1978 Argosy Minuet 6.0 Metre/1975 Cadillac Eldorado Convertible (8.2 Liter V8/2.70 Final Drive)