CompuServe Messages

I have been using MediaPhile video editing products for about three years. At present I have an MP 2.0S controller which I use to control a pair of Sony EV-S7000 source decks and a Panasonic AG-1960 record deck. I also have a Panasonic AG-7750 deck which I would like to use as the record deck in place of the 1960. My questions are: (1) If I purchased the 3.0S/422 controller would I be able to use it to control my AG-7750 while at the same time still controlling my two EV-S7000 decks via the present MP 2.0S controller? (2) If the answer to question (1) is yes, would I require a second serial port since apparently both the 2.0S and the 3.0S controller require the Amiga's serial port? (3) Is there anyway to control both the EV-S7000 source decks and the AG-7750 (RS-422 control) from the same MediaPhile controller? (4) Has Interactive MicroSystems yet created a device file for the Sony EV-S7000 Hi-8 deck? I paid $75 to upgrade to V. 3.9.8 of MediaEditor hoping to get a device file for the EV-S7000, but it was not included. Thanks for your help. Tom