Thanks Graham - I'll check it out. I suspect that might account for the stiffness when I first took over the Roadster - it was 5 months old with 250 miles on the clock. I've suspected that the suspension wasn't working as it should - first drive was up to Dartmoor: lost the horn push half a dozen times, (and loosened a few fillings I shouldn't wonder

)
It seems a lot better now - or I've just got used to it.