Tab.....Try this.....When you are driving on the highway put light pressure on the clutch.
If the vibration goes away...Re adjust the freeplay,and or put a stronger spring on the clutch
Also grab the clutch ped and try movin it left and right.....if it moves make a bush to the list above
Have you grabbed onto the driveshaft and tried to move it
I bet you got two things at once going on.....just an old guy guessin
