Maybe I'm missing something, but I can not find how to assign the Rotary effect for Organ playing to the Modulation wheel. Going from Off to On, etc. For that matter, I can't find any of the "Editable DSP Parameters" on pages 34-35 of the manual like the "Drive Rotary," etc.... I'm getting concerned... anybody know how to do this? Either the Modulation wheel, or maybe a footswitch... but I'd prefer the Mod wheel so I can use an expression pedal with the organ. Thanks in advance for your help.