Don't know anything about your question but I am interested in one of the powerdrive units and was wondering if you like the way the thing operates...... I like the idea of not having to put up with the stiff cable and needing to screw the foot controll in one place on the deck.As I have gotten older (and not as flexible) than i ust to be,i would like to be able to move the foot controll around.Do any of you other fellas that have these wish you had opted for the standard cable unit..... I have noticed that the pro's seem to all use the cable type. I wonder why?