Greetings from HOT Arizona.

I just picked up a nifty MFC10 from Scott Yee and am trying to learn how to work it with my Tyros. It seems fairly straight forward for the simple things I'm trying to do but I ran into trouble trying to get the expression pedal to recognize all the parts.
It changes the volume on Right part 1 but that's it. The other parts stay the same when I depress the pedal. I would like to reduce the volume on all the parts at once as happens with the separate expression pedal plugged directly into the board. Any words of wisdom would be appreciated.

RP