Forest River

We bought this unit used in 2019. Only took it camping local and closed to the house. This year we took a 5000+ mile trip from Florida, out west and back up to Ohio. We have found out these campers are not built for cross country travel! The screws started popping out from the benches, end tables, doors and cupboards. We had the camper go through slide out maintenance with Camping World, before our trip, only to find out it leaks when traveling and while it is raining. Have tried to contact Forrest River, but no luck, and Camping World says this is a common thing. Can’t believe this would be normal. Plus we have an electrical switch that no one can tell me what it is for.