Tape drive help?

In the interests of getting an old DEC PDP-11 running, I've got an STC 9-track tape drive here, a model 2921. This is, apparently, one of the rare few that StorageTek (aka, STC/Telex) manufactured with a Pertec interface vs. their own. Based on conversations with a company that still maintains these old beasts, it appears that the CPU card has gone bad. I'd like to at least try and confirm this by swapping said card with a known-good one. So... anyone own a 2921 that they don't mind it being used as a guinea pig? ;-) Thanks in advance. -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Bruce Lane, Sysop, The Dragon's Cave BBS (Fidonet 1:343/272) (Hamateur: WD6EOS) (E-mail: kyrrin(a)wizards.net) http://www.wizards.net/technoid "Our science can only describe an object, event, or living thing in our own human terms. It cannot, in any way, define any of them..."