Full time "RV" insurance for a standard conversion van

I have recently moved everything to a SD PMB, no issues as of yet.
Are you saying things to insurers or otherwise that throw red flags in the air? Answer their questions straight up, dont be dishonest, BUT DONT volunteer anything extra. That is where most problems come up.
If all else fails, try General insurance through Miller Insurance, they are used to dealing with Full timers. Miller
But even here, be honest to everything you are specifically asked.