Steve - thanks, that's just the sort of advice I was looking for. I'll get that done.
It is possible that the car has stiffer springs than standard - I have little information on what's been done to it but as it's had several modifications by the last but one owner (Stack, removal of spare wheel, etc.) then it is quite likely that springs,anti-rollbars, etc. have been changed.
After my winter rebuild I'll be getting it flat-floored so will get more advice then but in the mean time any suggestions for easy (low cost) adjustments would be appreciated.
Yellow SL #32