Welcome to the forum. All of us have had issues with new motorhomes and a good dealer should have you camping in no time.
Are you from Charlestown or Charleston? We'll be heading to Charleston next week. We'll be at the KOA in Mount Pleasant. We took out Challenger on its maiden voyage to Charleston back in April. We had a slide stop working when it was less than half way extended and required mobile tech service to get on the road. Steve, the owner of 1st Choice RV, had the problem fixed within 15 minutes of showing up at the site. I tried talking him into relocating to Virginia but he said business is too good in Charleston.
Again, welcome to the forum.