i have a wierd vibration that goes through the tunnel at 70-90.thought it was the rear prop as that had play in the mount and it rattled like a goodun.so replaced it.still there!the front prop has no play in where the joints are so dont think its that but it does feel like there is play inside the transfer box
driving the car home yesterday on the m25 i noticed that that if im sat at 70-80-90 in 4th gear it deosnt do it but the minute i put it in 5th it starts to vibrate.

any ideas poeple?