Restore corrupted dump tape?

Tue Jul 10 23:57:22 AEST 1990

Does anyone know how to hack a dump tape?  Our Sun 2/120, OS 3.5 tape won't
restore. Something about "date mismatch...".  Apparently the initial
cassette volume date isn't in sync with the date of the next one.  It 
seemed to happen frequently with multi-volume dumps (Sun repeatedly says
our hardware is suspect). 

Ideally, I'd like to restore the whole dump set but any file recovery at all
would be great.

Any help much appreciated.

Charles DeRykus				Internet:   ced at bcstec.boeing.com
Boeing Computer Services		UUCP:	    ...!uunet!bcstec!ced
Renton, WA.  M/S 6R-37			(206) 234-9223 (work)