Recover damaged exchange priv.edb file?

I have a priv.edb file recovered from a bad drive. It had a bad sector in this file. It checks “consistent” but when I try to defrag it ended about 60% with the following.
Error -1507 (JET_errcolumnnotfound, no such column)
Config:
WinNT 4.0 SP6, Exchange server 5.5 SP4 (SP3 when damaged).
When I try to fix via: “isinteg -pri -fix -test alltest” I get: ecnotfound_mapi_e_not_found.
Is there a way to force recoverable data from this file? I haven’t found any help about this message.

Thank you for anyhelp you can give me.
Chuck