Just reinstalled my rear diff. Made it 92200 miles. Started seeing flakes about 6k miles ago. Put 2 new tires on recently and after new tires I could tell I had some bearing noise or roughness. I know a lot of folks say it comes with out warning. Drained the diff again and more flakes. Noise was mostly on drive side of gears went away on coast. Sent it to Saddleman last Wednesday UPS ground and he had it Friday. Showed up on my step this Wed. Not a bad turn a round as it went from IN too NC and back. He said crown bearing was just starting to go and pinion race was loose but looked good for the miles. Test drove already and my noise is gone. Did change trans lube also and drain plug looked good. Ready for another 92k miles. Big thank you to Saddleman and UPS for the quick turn a round.