anybody know how to do a split on the cx3 korg?.....i just got mine and i'm having a little trouble......it splits and works fine if i use a separate midi keyboard for the lower manual....but i'm trying to just split the on-board keyboard and assign the 2 separate set of drawbars to it....what am i doing wrong?.....thanks in advance for help!.....i gotta use this tonite!......lol.