Shutter/Vibration in H4

[Sunny Coaster]

Went up Double Island on the wknd and noticed that when in H4 there was a vibration going through the car, you could see the steering wheel shake as well. Only happened in H4 and was not there in H2, L4 or 2wd.
When I was hosing the Nav at the under body wash my partner said the clutch popped out as if it was stuck in slightly (felt fine under the foot).
Any body have any ideas before I pay to have it looked at...?
Thanks

 

[nuckin futs]

maybe try it in h4 but with the hubs out. youd think if it were the clutch itd do it in 2h also. checked ur front unis??