Time to publicize this information again:
Go to Forest River RV - Manufacturer of Travel Trailers - Fifth Wheels - Tent Campers - Motorhomes
(forestriverinc.com/rv) and click on the "Contact Us" link. You'll get a page that shows RVs by type -- motorhomes, fifth wheels, travel trailers, toy haulers, etc.
Select the type of unit that you have, then the brand, and you'll get links to sales, service, and warranty personnel. There's a lot of other good information available at that page as well.
For Coachmen, Prime Time, Shasta, and Dynamax, go to their individual websites and do the same.