Clif,

You are absolutely correct. The sustain pedal is nothing more than an on and off switch. I do know better than that. I'm looking for something so I don't have take my hand off the keys. Lowery organs used to have a "glide" pedal switch attached to the expression pedal. My Yamaha PS6100 has a switch that changes the sustain pedal to glide. I don't know how they did it.

Thanks

Tom