You should try my Class A... (Basement, Slides (Master lock) Water graveity fill access (Also fits a door I added) Door snap lock, door deadbolt, Ignition, hood/dog house. I think there is at least one more but just now forget what.
Different makers, different models, different keys,, Major pain in the ring.
Every time I hand the ring to a mechanic he warns me of too much weight on the ignition key.... He usually retracts the warning after he gets in the RV to drive it in and finds out there is a key, all by itself, no ring, no added weight, already in the ignition (I take it out i I won't be in the motor home and store it) The one on the ring is simply the duplication master.