Here is what I'm wondering, if the OI uses an internal resistor for the "bottom half" of the divider leg, if you were to use a joystick with 10k pots, would the current drawn by the pull down resistor make the output of the joystick that far off? I know it would add some non-linearity. But if there is a joystick you really want, couldn't you fix that in code? I know my saitek cyborg (my own personal one, were not trying to use it...) has the pots wired up as dividers, not rheostats like the white sticks we've had for the past two years.
Of course if you are really really bent on using a particular joystick, just program a PIC to use the ADC to sample the joystick axis value and output the value to a 100k digi-pot.
