The focus of this post is to prevent you from finding that lemon and avoiding any legal hassles. If stuck with a lemon, you cannot legally re-sell it, so pay attention. 

RV Travel Manufacturer Recalls: https://www.rvtravel.com/category/rv-recalls/

National Highway And Travel Safety Administration: Manufacturer Recalls: https://www.nhtsa.gov

Review Thor: https://thor-industries.pissedconsumer.com/review.html#reviews

Contact Camping World: https://rv.campingworld.com/marcusvip - Directly to Marcus Lemonis, Chairman/CEO Camping World and Good Sam

Find a Pre-Purchase  Inspector: NRVIA.org (National Recreational Vehicle Inspectors Association)