Hi Dave. I own the Tr-Rack too but haven't had any problems with Sysex dumping receiving nor with the Sound Diver's requests. The Tr-Rack can not send notes at all because of lack of built-in sequenser, only Sysexes. When dumping data from Tr-Rack by itself, choose properly parameters on page 12 in Global mode; when requesting from SoundDiver, there's no need to do anything on the Tr-Rack, it dumps immediately after request is received. All the procedures are quite plain, just perform those with appropriate attention. I'm not clear about your difficulties, you can e-mail me in details how you do it.
Renny