I think this is overkill also.
If I can hold your keys in my hand, I can look at your key code and buy a key on the internet for about $1.
I re-keyed our Keystone (2 doors, all the storage) to a single key. It was cheaper to buy the whole door latch mechanism than it was to take it to a dealer and have them change the cylinder....
If I wanted into your RV, I'd simply use a crow bar and have the door open in less than 10 seconds...
If you really want to re-key, for my 2015 Keystone, I bought parts here:
http://www.rvlocksandmore.com/