"I have a 2021 Entegra Accolade Model 37K. When I put out the living room slide it clicks(slips) a number times prior to being moving smoothly. I think it needs some adjustment but the dealer didn't think it was an issue."
Isn't it still in warranty? Have you called Entegra help desk?
On the mileage, how many miles do you have on it? Who told you "low of 11 MPG to a high of 17MPG"
Depending on weight and driving teckneak I would say smile if you are at 7 and don't tell anyone if you get 10.