You know what is sad? A lot of the used ones you see on ebay are ones where they have been replaced under warranty. Just look at who is selling it. If it is a dealer you will see what I am saying. Most of the time when a front diff goes bad they just replace the complete unit. The trick is, the dealer usually keeps the bad one, rebuilds it and sells it. A friend of mine just had his replaced at Ritchies Tractor in Athens. I told him to ask if he could have it. They told him he could but he had to wait either 60 or 90 days, I can't remember for sure, but then he could have it. I thought that was pretty nice of them.