Reply to S2 - question about mapping!!

Hey guys

I havnt even received the s2 yet but was wondering about mapping? i know there are knobs for HIGH MID LOW for each deck but i wanna set those knobs for GAIN FILTER KEY and then use the shift button to then use those knobs as HIGH MID LOW.. Im not sure if thats possible if possible to let me know if it is would be awsome! But i also read that there is already a GAIN (shift=FILTER) knob on the s2? if so can i change that knob to something else?

Maybe what would be ideal for me:

3 mid knobs: HIGH becomes GAIN
MID becomes FILTER
LOW becomes KEY
and that gain knob could become LOW and throw the HIGH AND MID as shift knobs for either of the 3 middle knobs..

Thanks for you time