I took it to General RV, which is the closest dealer to my house. I did not buy my camper there, but I asked them if they would perform the warranty work on my coachman since they sell coachman.
They said they would, but they couldn't find the part and coachmen didn't have them in stock, so I had to find a specialty plumbing outfit to make the hose with the specific fittings that I needed.
I had to spend the day scrambling to find the part, but the dealer assured me he would get it turned around same day, so that we would not miss our trip. The dealer also said they would find a way to have coachmen cover the $95 cost.
I got to tell you, if I was treated by the sales people the way I was treated by the service department, I would have bought my camper at General RV