2-piper, thanks for the information. In the article from "Home Gunsmithing Digest", that I mentioned earlier, it also stated about packing the parts in a crucible of steel and doing the same thing. It did not go into detail on re-doing case-hardening on the same part.
I have to go along with Roy and say I would be very skeptical about recase-hardening now that I have heard about his experience.

David