Had my car to the garage a couple of weeks ago to get the CV boots and a track rod end sorted. When we got the car back the first motorway trip we took threw up a vibration through the car at 60+ mph. We also have inherited a knock, which isn't always there, sometimes it is when turning left, sometimes when turning right. Hardly ever when going straight. Been back to the garage and they can't find anything, and as usual it never knocks when we take it in... Anyone had similar or have any suggestions? This si seriously doing our nuts in now.