Years ago I had a problem with a DAT I recorded that would not playback
properly. I was getting many dropouts and loosing the signal for long
periods of time. It was part of a documentary being produced and we could
not get the talent to redo the recording.
I contacted Next Generation http://www.nxtgentech.com/ and sent them the DAT
tape. They where able to calibrate one of their DAT machines and make a
copy which worked perfectly.
You may want to contact them to see if they can help.
Creative Audio Works
15 Bay Colony Drive
Plymouth, MA 02360