Cheers for the replies.
After trying a few different pressures out I've dropped down to 32 front 30 rear. The car was very crashy at 36/33 on bad roads.
It might be a bit too low at 32/30 but it doesn't feel any more vague than at the higher pressures, just lots more comfortable.
This could point to shocks/bushes/both being tired. I'm on H&R springs on what I assume are the original shocks. I plan on refreshing the bushes and looking at maybe Bilsteins to replace the standard shocks at some point, maybe even coilovers but they'd have to be a good ride.
