So you got an ishy feeling about, well, probably nothing, and still bought the RV?
Now you’re claiming you have legal troubles with the title and/or registration?
None of this makes any sense, really, unless you’re actually going to explain the real problem and the consequences you’re so worried about.
That said, to be fair, different states do have different and sometimes strange sounding requirements or lack thereof.
But in this case, will chalk up your experience to some hand wringing or too much late night googling about stuff you think could go wrong.
I doubt that a large chain of RV dealers like the one you mention, send all their customers out the door committing some sort of vehicle registration violation.