Diff gone?

What a saga....

Recon auto box fitted. Heavy thumping through the car from the front at parking speeds on lock. Must be front driveshaft. Change both shafts. Noise still there. You can see the wheel jumping as you do it. At any speed over 10mph or in a straight line, no problem.

I assume that the diff is the culprit, losing friction between the plates as a different torque is demanded by each front wheel?

This is the 10th week of being off the road.....Back to the garage on Monday. Again.