Just been to my local dealer for a health check before my warranty runs out and they say one of my rear shocks are leaking so need replacing. I clarified if they where doing the 2 of them and they said no only the one ? I did check numerous times that that was correct as I was always told that 2 together needed doing to save an imbalance over rough ground and also when cornering / braking..... any ideas is just changing one correct ? -and if not has anyone else had both done when it's just one failed under warranty ...thanks