The PC-3000 have that "fork" method option to fix translator that can be very usefull on this sort of sittuation ...
Even the Salvation Data HD Doctor for Seagate have an option to deal with this (that works like "Leonardo Method" -
http://www.hddoracle.com/viewtopic.php?f=6&t=196 ).
For MRT you can use the instructions provided by MRT staff on those mentioned MRT articles or if it fails you can check the entioned example of how to fix this using SeDiv and apply the same method to MRT.....
Please do tell us if you do make progress with this recovery !
MRT Technical Staff see my case on tv next working day.