when my center differential failed my bearings went as well. i hope they cleaned that transmission up very well. fluid makes a major difference on noise. i added lucas into my transmission and a lot of the whine went away.
is it a loud whine or just something that you actually have to listen to? when my center differential and bearings went it was loud, i could hear it over my full exhaust. then when i fixed it the whine was there but was very quiet.