Potentially stupid question, but did you try booting the Q605 from them AFTER the failure with the Duo 210? Unfortunately, past performance is no guarantee of present functionality with vintage gear.
Failing that, how certain are you that the drive is working properly? Even if it looks OK it may have alignment or cleaning issues.
Failing that, how certain are you that the drive is working properly? Even if it looks OK it may have alignment or cleaning issues.