Turns out the pins in the tumbler had gotten jammed and were out of alignment. Locksmith made short order of it. FYI manufacturer of the lock set and parts is RVLOCKSANDMORE.COM
574-361-3770 (ask for Debbie), 888-400-9849 is the main number.
They have all the parts on their website. You can order keys to match yours. Key number is inside the door lock itself, if you don’t know it.
