From what you said, I assume transferring MD is similar to DAT, and it is a real time transfer. I have WL6, so I would record a single channel, or both, if that was not an option. It is then simple enough to copy that into the other channel (track), in a montage. I would mute the "dead" channel, just to be on the safe side. If you then offset the tracks by a couple ms, it will give the "illusion" of stereo.