Who has ever been weighed when RV towing?

There is a place in WV where the truckers have to pull off the highway to weigh. I was once pulled over right after the exit and the trooper told me my bus was commercial no matter what my registration said. He made me follow him back to the scales where a different trooper told him I was not commercial after I weighed.

If my rig was not made from a bus than I would of never been pulled over.