New owner, several questions and needs..

[Standup]

The gas cap (2013 2500TS) is exposed and non-locking. Are the aftermarket locking caps weatherproof, and can you suggest one?

How can I find out the actual flooring type? Wife insists on knowing this
to clean properly.

I'd really like to know the precise layout of the framing behind the walls.
There's lots of stuff to mount. Any tips on this?

I tried calling Sunseeker today, but "this number is temporarily unavailable".

Standup in WA state

[Ford Idaho]

Good afternoon and welcome to the forums from SW Idaho.

A locking gas cap will have a small sliding plate over the lock to keep it from filling with water but they are water resistant not water proof.

Did you get any paper work with your unit, if so it may be there.

There are no givens as to the layout so the best way is to use a stud finder.
Many people here use the Command strips with hooks or the hook and loop or Velcro.

[RamblerGuy]

I got a locking gas cap at NAPA. Works fine. I left it on the pump at the first gas stop and picked it up on return trip. Now I leave the key in it on the pump. Can't leave it that way.