Travan TR5 data tape recovery HEADERQIC113

I'm trying to recover some data stored on an HP SureStore T20 SCSI tape drive on a Travan TR5 tape. The tape is a QIC-3220-MC format. The data was written using either HP's Colorado Backup II software or Yosemite Technologies TapeWare 6.20 SP3B, or even Backup Exec. I believe it was TapeWare. It was done on either a Win98 machine or a Windows 2000 machine. When I pull the header information off the tape, I see this http://pastebin.com/xn837e0w HEADERQIC113 volume name of Disaster Recovery 00001, Arcada Software, INC. vendor. I'm attempting the recovery in linux, using ddrescue on the /dev/nst0 device. The first 660MB is readable but of course the files still need extracted from the raw tape dump. Once an error is encountered, the HP's firmware takes the SCSI device basically off-line, and tries multiple passes, resync's the tape, tries again, and basically goes unresponsive. I'd love to go "raw" and just have the drive report a straight-up error, and move past it on the tape, because there could be more readable data stored later. Even if I'm able to extract a large portion of the data, there's still the issue of how to handle this format. I've found the QIC113 spec online, and it doesn't seem impossible, but obviously it might be nice if there were pre-made tools out there to deal with this. Anyone familiar with any tools that can manipulate this file format? Is it possible to disable the "intelligent" error handling of the drive to just read it in a raw manner? Thanks, Keith