Hi folks,
Have a slight vibration coming from front prop mostly around 60mph on cruising not on drive or slowing down, on inspection I found front prop has a very slight bit of play in it on the splines clockwise v counter clockwise if you follow, thinking of removing the front prop and driving with diff lock engaged for a short trip to test, would this action do any damage to my centre diff or other drive units ? Thanks

No, shouldn't hurt anything.