TSM 4.1.3 on NT4 with IBM library with LTO drives

When I do a 'q libv' my listing shows two tapes

Library Name Volume Name Status         Owner        Last Use  Home Element
------------ ----------- ---------- ---------- --------- ------------
[snip]
LB6.0.0.1        175ACBL1        Private                     BackupSet 4,111

[snip]
LB6.0.0.1        191ACBL1        Private                   BackupSet 4,107
[snip]

I use the GUI to delete any existing backup sets, and it says there are
none.  It generated the following messages:

09/16/2002 10:31:00   ANR2017I Administrator ADMIN issued command: DELETE

                       BACKUPSET * * BEGINDATE=01/01/2001 BEGINTIME=NOW

                       ENDDATE=09/16/2002 ENDTIME=NOW PREVIEW=NO

09/16/2002 10:31:56   ANR2034E DELETE BACKUPSET: No match found using this

                       criteria.

How can I get these back into my scratch pool?
How could I find out what is on each of these tapes (what backup set)?

Currently when I do a Q BACKUPSET I get
ANR2034E QUERY BACKUPSET: No match found using this criteria.
message.

I am thinking about doing backupsets for our DR efforts and these are
remnants from some testing I was trying to do.

TIA... Suggestions?