Can the octave be raised or lowered on the left hand, or left of the split point? I would like to raise the left hand one octave and can't find in the manual how to do this. My Yamaha 740 can do this with two or three simple changes. I like to play left hand chords further down on the keyboard so I don't get tangled up with my right hand, but the chords sound muddled in the lowest octive. A 76 key keyboard is sounding better to me all the time (I really miss a two-manual organ). Any responses on the octave change will be appreciated.