Just get another 751 lock and don’t worry about someone using a key to get in your storage compartments. A number of RVs, including mine, were broken into in a storage facility several years ago. They didn’t bother with a key. Just popped the storage compartment doors with a screwdriver or such. And didn’t even damage the doors. Just bent the little tab on the barrel locks. Keys would have just slowed them down. Small barely noticeable black mark on the door frame. Bent the tabs back with my thumb and they are still there.
For the few they also got inside, they just broke out the door windows and reached in and opened the doors.
