What is the current feeling for sagging rears? I have an '86 Westfalia. I
have noticed that my rear ride height is low on the drivers side. I have
read that this is 'normal' for a Westfalia as it is always unevenly loaded
(fridge, stove and cabinetry).

I believe the springs are original and they appear to be in good shape. From
the list I have read a few 'fixes'

From high to low $$

New springs
AirLift air bags
Plastic cutting board doughnuts
Swap springs side to side

Thanks

Dave