thanks for those replies , i'll try some things out tonight . that's right to just have a tone playing in background and playing over that using sustain pedal on split upper part , might have to use a looper pedal . even with a looper pedal it might have a tick sound when it loops . i have an expression pedal i'll try to set it for lower end and other pedal for upper end .
switching between banks without affecting the last played notes i think i ran across that a couple years ago , piano man chuck discovered it from one of his viewers , it's a key combination and can't remember what it was . one of those hidden fixes , sorry i couldn't be much help there . thanks people for help .