Emilio, I think it is that the jaws are designed to be finish ground in place, which is a good way to get a good fit -- in a factory repair shop with all the correct fixtures. It does not help hobby machinists working on their own chucks much, but we are not the bread and butter of their business, either. Sounds like it is send it in for repair, throw it away, or buy the jaws and see what you can do with them. Certainly not ideal from our viewpoint, but it is what it is, and may influence my future chuck buying decisions.
Edit: and a 10% spiff for a replacement chuck doesn't give me warm fuzzies, either...