You might want to call the Forest River factory customer service line and ask them for some right answers and help with the dealer. When I bought my motorhome new, I had the usual list of things for the dealer to fix. They fixed some things, but claimed other things were my fault, so not covered under warranty. In a few days, some of the things they "fixed" had broken again. When I took it back, the mechanic said he had already fixed that and that I must be doing something to break them again. (The one item was that the trim on the overhead sun roof kept falling off and hitting me as I drove, so I could not have broken that!) They also told me one drawer had come unlatched and bashed a hole in the paneling next to my stove because I had "overloaded" it, so refused to fix that as well.
Anyway, after more grief and arguments. I called the Fleetwood factory service people to ask for the load limits for all cabinets and drawers so I did not break anything else, especially since I now had a 4' hole in the cabinet paneling. They said there were no such load limits. Long story is that I started taking it to the factory for repairs. (Luckily, Decatur, IN, was not too far away and I had to drive past it to head west.) I ended up taking it there instead of the dealer and not only did I get no arguments from the mechanics, they fixed everything right the first time, and gave me correct answers to questions! They even fixed one thing I did not know was broken.
Also, unless they have to order an unusual part, they should be keeping your rig only a day or two to fix stuff. Do NOT allow them to give you the "few weeks" story. Basically, they like to tell you that so they can park your rig in the back of the lot and only work on it when they don't have more important things to do. Those of us who full-time have learned to get time estimates before we go in for service, and we will almost always tell them we will have to wait for the repairs to be done because we have no other place to go. (Having a customer sitting in the waiting room makes them work faster.) We also make sure they have the right parts. I have gone as far as ordering the parts myself in advance from the factory and have them shipped to me so I can go in with the right parts. That will save you a couple of weeks of "camping" in your rig in the dealer or service parking lot!!
Excellent idea to take photographs of before and after, as you have learned!