How do you get to the rear wall?

[AccessMaster]

Does anyone know how to remove the rear counter and wall to get to the shell on the rear of my 1988 Classic 345? I have a double bed model. It looks to me like it was assembled before the skin went on from the outside. Which now makes it impossible to reach the screws that hold it together. I am trying to repair body damage to the driver side corner and thought that I could push the dent out from the inside.
I am still looking for someone in the Houston, TX area that could do the body damage repair.

[thenewkid64]

A rear reapit is alway the toughest to get to. Once the shell is complete at the factorey the builers start with the rear of the coach and work forward. This creates many issues when bathrooms need to be removed, or in your case interior walls need to be accessed.

The only real advice I can offer is to get the screwgun out and go slow. I just replaced the refer in my 78 MH and I had to take apart the cabinet it was installed in and much of the celing and overheads. It was all layered on each other and I had to get 1 lousy rivet out to make it all come apart for access.