> is it normal for my 91 westy to sag 1/2 inch on the drivers side after
> installation of the recommended kyb set up all around?

Yes.

does the weight of
> the cabinets & such affect the shocks that noticeably

No... doesn't affect the shocks... It affects the springs. The springs are
what determine ride height and they sag over the years... they sag more on
the driver's side of a westy due to cabinets, stuff in the cabinets, water
tank, propane tank, etc. ... that's why some of us are waiting for a group
purchase of custom springs.

Bill