Here is a few things that I did to are 2015 Jay Flight 23RB.
Installed a inside shutoff valve.
Took out the plastic city water inlet and replaced it with a metal and brass one.
Installed a new water heater plug.
Replaced the mouse hole with a detachable power conversion kit by Marinco.
Installed a pullout drawer under the dine net seat.
Installed a divider between bed storage and the outside storage.
Boxed in on the sides of the bed platform so there are no gaps on the sides.
More to come!