Hi guys any ideas what could cause a rear end vibration on my ba. I get what feels like driveline vibration at 45 - 60kph and back again at 80+.seems to get worse under load like when I start going uphill or under deceleration, it kinda goes away if I accelerate hard, but the thing that gets me is it gets really bad for couple of seconds whenever I go through a dip in the road, as soon as the rear end hits it.
Tailshaft center bearing and uni are good.