PV120T DLT7000-errors on Verify and Restore only

I am having issues with my DLT.  After completing a backup job, it fails when attempting to verify the backup.  I have tried updating everything I could think of.

I am using Veritas Backup Exec 8.6 on Windows 2000.  The autoloader now has firmware version D116 and Microsoft Driver 5.0.2195.6717.  The tape drive has firmware version 296D, Veritas Driver version 4.0.1381.1.  The Adaptec Scsi has the Adaptec driver version d2.23.

There was a previous post to this forum

 (http://forums.us.dell.com/supportforums/board/message?board.id=pv_tape&message.id=1678) with almost the same situation, however no conclusion was ever posted.

I get the following error in the system log:

Event Type: Error
Event Source: aic78xx
Event Category: None
Event ID: 11
Date:  2/17/2006
Time:  2:19:14 AM
User:  N/A
Computer: DEVWEB01
Description:
The driver detected a controller error on \Device\Scsi\aic78xx1.
Data:
0000: 0010000f 00680001 00000000 c004000b
0010: c1305022 00000000 0000000a 00000000
0020: 00000000 00000000 00000000 00000003
0030: 00000000 00000005

Followed by:

Event Type: Error
Event Source: dlttape-VRTS
Event Category: None
Event ID: 15
Date:  2/17/2006
Time:  2:19:15 AM
User:  N/A
Computer: DEVWEB01
Description:
The device, \Device\Tape0, is not ready for access yet.
Data:
0000: 0018000f 00760001 00000000 c004000f
0010: 00000104 c000009d 00000000 00000000
0020: 00000000 00000000 00000000 00000003
0030: 00000000 00000000 00004a00 0000d0cd

I have a suspicion that it is related to the SCSI controller driver, but don't know where to go from here.

I have spent an enormous amount of time trying to get this drive to work, any help would be greatly appreciated.