>, I decided to never use the city water connections. I
am concerned that one day the pressure on these whimpy connections will
cause a leak.<

Found this out too late...first time i had the bus out the water was just
pouring out from under the floor, due to the city pressure having blown a
connection somewhere(probably during the previous owner's tenure). Found
out that the trick is to get a pressure reducer at the RV supply store 
that screws into the city-in line, according to my RV-ing inlaws...
Now I have to haul all the cabinetry out, i guess, to locate and fix the
leak, before i have water again.
BTW, I noticed that the seal that guides the sink  drain  out thru the
floor pan is all chewed up and gone. Where in the world would you get this
part?

David Griffin