Anyone had this - it is difficult to describe but basically when reverse engages and you feather the throttle to move backwards the car almost goes with the throb of the engine like the gearbox / clutch is not right and not engaging properly. I have noticed it a few times and my other 35iS didn't do it. Any ideas ... ? I will mention it to the dealer when the car goes in on 1st June anyway if it keeps doing it ... just wondered if anyone else has had the issue.