Xebec Hard Sector Floppy System and Tennecomp Tape Drive

I recently acquired three of these Xebec XFD-108 dual-drive units along with three PDP-8/Ms and a PDP-8/E. It looks like I've got one 8/M and drive fully booting. However, I also seem to have a lot of bad media. Here's an album of the haul: http://imgur.com/a/fDVDH I'm trying to find some more info on the Xebec drive units. They use Memorex drives, which date to 1974 or so. These use 32 hard sector floppies, with the sector holes on the outside. I'm currently writing some software to back up these floppies and will try to integrate it with David Gesswein's dumprest utility so I can eventually get a handler working in simh. For now, though, I'm trying to just back up the floppies as to protect against further data deterioration. The floppies are actually configured for 10 sectors, oddly enough. This gives 640 256-word blocks per disk. Has anyone used these early Xebec drives? In my little bit of documentation, I seem to be missing the chapter on the device handler for OS/8. I have a few booting floppies right now, so I should be able to get the handler from one of those, but just in case... It would also be nice to have the FORMAT program for this system, which is yet again something else missing from my docs. Also, I haven't yet played with it, but I also have a Tennecomp tape drive that uses radio-station-style 4-track "carts" to store data on serially. I unfortunately do not have the controller card for it, hence my inability to do much with it. I do have some tapes for it, however. Thanks, Kyle