Just to update my front diff & knocking noises problems. I've had the front diff swapped with a secondhand unit and it's made a big difference to the general noise from the front end when cruising. I can now hear the radio!! Unfortunately, I wasn't able to let the garage have the vehicle long enough ...

I have the same CLUNK under the same conditions plus other symptoms. I suspected the front dif was getting noisy a couple of months ago so I changed the oil and that made a big difference to the noise during the cruise. I now have juddering between 50-70 mph when under load and a rumbling at low ...