Digidata Mag Tape Unit

Sir, I am following up on a query on the following link and am hoping that you may be able to help...: http://www.classiccmp.org/pipermail/cctalk/2003-September/026900.html Within our organization , we use a number of 9-track Digidata Mag Tape Units, Model P/N 1149-8-2-120-FN-UL. We have some vendor service manuals for these, however what we have, do not have any information regarding how to perform or check head alignment. We are looking either for a manual addressing this head alignment or a "service agent" that has the capability to repair / align these units.. We have tried Digidata themselves and they have no information. I am assuming someone somewhere has the capability / and or knowledge to repair them and am looking for a contact Any suggestions ?? Thanks for your help. Julian Vines Engineering Dept. Navigation Systems Division Northrop Grumman Canada Corporation 25, Cityview Drive, Toronto, Ontario M9W 5A7 Ph: 416 249 1231 Ext 2603 Fax: 416 246 2018 Visit us at www.ngnavsys-canada.ca