Sorry to say but, you are experiencing the same defects that most see. It is disappointing but continues all the same.
We have been lucky with the pocket door, but look at the possibility that it needs to be adjusted lower so the catch will stay engaged. There are adjusters on the top sliders that can be accessed behind the return air grill above the pantry. May have a look in there too for the rail mounting screws coming out. Needs longer ones.
If you have raised the coach by moving to the lower holes in the shackles, be careful where you position the Trailair CP link. It doesn't always get changed depending on the link they installed. Check with Dale at Trailair he can help. You can get suspension bind and possible tire and axle issues if not set right. Bruce may pipe in here??
You pretty much hit the basement door fix! Two of ours fell off the very first time we opened the doors! That was after the dealer at my request before our PDI fixed them all!
I did the Mod to all of them to avoid anymore grief.
Hang in there and keep the toolbox handy, these Beauties are a work in progress!