Hi. I just received my used 2019 Momentum 376TH. I have connected to city water and found that I am leaking at the city water inlet on the Nautilis system in the water bay. It's a brisk leak, and I don't want to leave it this way even overnight. I have a pressure regulator at the campground spigot. I have an insulated hose, connected to a 90 degree brass elbow at the city water inlet. I have:
Put on plumbers tape
Removed plumbers tape
Changed out 90 degree brass fitting
Tried different 90 degree fitting with quick disconnect (without and with plumbers tape)

I think I may have damaged the plastic white city inlet connection on the Nautilis by stripping some of it or something? One of the original setups I tried didn't want to thread on, and I may have forced it a little bit or cross threaded it?

Anyone have suggestions? Is replacing the plastic city water inlet a difficult task?