I was in Des Moines recently, and a guy who had just bought a used Axis was complaining about that same dealer. Tough lesson in "Buyer beware."
It's always a good idea to have a used RV inspected by an independent mechanic.
I traded our Vegas for a 2016 Hurricane 27K a year ago and it took a lot of time and money to make it what we want. We hope for a few good years, but plan to sell it before it reaches the 10 year devaluation mark. What you and I bought is really a kit!
BTW, check the dates on all the tires. Ours were original. That was our first $3K expense (expected).