hi Richard,
First all all, glad to hear that you received the MFC10 safely, and that you were able to get the basic arranger functions programmed easily.
Though I myself have never utilized the expression (volume) pedal function on either the Tyros or MFC10, I'd expect, that in order to get the MFC10 expression (volume) pedal to trigger ALL parts: Right1,Right2,Right3, as well as Left, that you need to assign the 'Expression Pedal' function's "Part" setting to: 'KEYBOARD'. This can be found in the "Foot Controller Setting" section of the Tyros' MFC10 Display Window.
Good luck and let us know if this solves the problem.
Scott
[This message has been edited by Scottyee (edited 06-07-2003).]