Found my first issue with my 2380s. Pretty big one for it too...
When Sunline added the LPG line from the main feed (streetside) to the curbside external output, they missed the stud in the floor the first 3 times they tried to put the support bracing in.
They found it on the fourth time.
They never went back to patch up the holes in the underbelly material (the plastic woven material one).
Dangit. Water got in, but it doesn't seem bad.
I ordered underbelly repair tape from here:
and when it comes in I plan to use a hairdryer to dry out the insides as good as I can, then patch it back up.
It really irks me they neglected to fix it- it's not in a spot where it is visible at all unless you are RIGHT underneath it- but definitely, without a doubt, was seen by the installer (as (s)he had to pull the other nails out of the torn-up holes). I don't blame the dealer at all, as I didn't see it until right underneath, and I only got underneath due to the lift from the axle flip.
Moral of the story:
CHECK YOUR UNDERBELLY! Someone may have missed something.....
I'll try to remember to re-post when the stuff gets here to fix it.