I just opened up the case on one of my bad 1394 drives (to move the disk into a new ADS case)
I noticed that ADS uses an 80 wire cable (for ata66 and higher) The bad case used a 40 wire cable (for ata33 and optical drives).
I'll experiment a bit when I get home to the other bad drives. I have to assume that 40 wire cables aren't right.
This particular ADS case plays back just fine with the old disk.
Rob Mack