'04 Montana 3295RK Shower Question

[Mark 7]

I would like to change to a better shower valve in my 5'er.

Question is, every camper I have ever owned has had an access panel somewhere that could be removed so the back of the shower valve could be accessed.

In this trailer, the shower valve is in the wall dividing the living room and bathroom area. The shower is on the road side, so the living room wall has a shallow cabinet with a coat rack in it just inside the entrance door.

I took the coat hook "board" (1X4 inside the cabinet) screws loose thinking perhaps that came out and the valve was behind it. It is at about the right level... but it was still fairly solid. I did not explore any further as there is a lot involved with that cabinet, including the power center in the bottom of it.

Any idea's anyone? Can those cheap plastic valves be removed from the shower stall itself?

See floor plan below...