Greetings from NY and welcome to MOC.
We have the 3731FL and our list the first year was about the size of yours. Since then the rate of growth of the list has slowed quite a bit. Though we had no problems getting things fixed with the dealer, many were so minor I could fix them myself quicker than it would have taken to explain to the service manager. Usually done at no or very little cost to me. Biggest issue under warranty was when the microwave died. We were in the south for the winter and heading home without the 5er for Christmas. I removed the unit and the dealer supplied a new one that I installed when we got back down south.
Rig is in the shop now having an axle replaced. Warranty would not cover it as it appears to be impact damage. I don't know when or how but there are some pretty rough bridge transitions on the Interstates. Still you wouldn't think it would damage an axle. I will attempt to turn it in to Insurance under comprehensive as the dealer recommended. Getting it back tomorrow.$$$
