My bus has covered about 300,000km and is leaning to the left quite
noticeably (viewed from the back)  I'm guessing that the springs on that
side have sagged because all the weight is on that side,(propane tank, waste
water tank, water tank and all the cupboards - driver too!)  So I guess it'd
be wise to swap the springs out and while I'm at it I might as well do the
shocks.

Here's where I'm looking for advice.  Can I get lower/ stiffer springs?  Can
I get harder shocks?  I want to control body roll mainly but don't want a
really harsh ride.

Has anyone experience of this problem and a solution?  Any help would be
appreciated

Regards
Martin Dell