Phonemark/Entrepo Quick Data Drive

Hi, My old Citizen 120D+ is back from the dead (thanks to some 0.71mm tinned copper wire and a bit of fiddling with my soldering iron) and I've got another query. A while ago I got a Phonemark "Quick Data Drive", aparrently made by Entrepo. It uses small endless-loop tape cartridges called "Wafers" (any relation to the Rotronics Wafadrive? hmm...). Without the Master QOS Wafer or the blank wafer that were supposed to come with it. Anyone care to tell me where I can get these tapes? Also, without the QOS wafer, I can't get my VIC-20 to work with it. Anyone want to hook a QDD up to a PC and transfer QOS to a T64 (tape) file for me? I've had the cover off, and it appears to use a small-ish black plastic mechanism with "BSR" printed on it. This mechanism looks (from the front) exactly like the ones on the Rotronics Wafadrive. Anyone know if Wafadrive cartridges will work with it? Anyone know where to get Wafadrive cartridges? I _know_ this thing will work on a VIC-20, but without the QOS wafer or a blank wafer I'm stuck. Is the tape inside these carts normal C-30 "Computer Tape"? Anyone care to sacrifice one and take pictures and measurements? A 2D CAD drawing of the tape would be nice (I can get good-quality C60s relatively easily, I just need to know how the wafers are assembled). Thanks again. -- Phil. philpem(a)bigfoot.com http://www.philpem.f9.co.uk/