I had the same thing happen to me several years back, except it was on a 1957 Chevy Pick up truck. The last 4 on the VIN were 2442 but the title said 2424. I had drove that truck for a few years & made improvements on it. I never noticed it until I went to sell it.
It was a small pain to get it corrected. But I had to go to the title's state DMV. Lucky for me that I hadn't moved out of that state yet.
I wish you good luck in getting this mess straightened out, especially if your RV has a CO. Title and you being in ID.