Hope someone can shed some light on my problem. Let's say I'm cruising at 80kmh. I get a constant noise from the rear end. Kinda like a constant hum. It dissapears when I realese the throttle or press the clutch in. As soon as I press the speed pedal the humming comes back, I can't here any huming when accelerating. Just when crusing. The faster I go the more noise.