Mine has juddered nearly the whole time I've had it when setting off. Does it intermittently, like not all the time. I always putting it down to cluch slipping slightly but grippin and then slipping then gripping so gives a judder. and Adam, you say something about a spring? My gearbox sounds like its knocking like fudge when your sat in the car, sounds like a bottom end knock although you can'r here it at all when out the car. Could it need a clutch? Not trying to jack thread here just curious