I tried to assign expression pedal CC11 on Pedal 2. It doesn't work at all (using Roland EV-5 as adviced). Each time I set continous controller on pedal 2, at the same time it changes swich to continous on pedal 1. Sustain (Yamaha FC 4, CC64) works OK on both pedal 1 and 2 slots.
Impossible to set right controlls when both Pedals are connected.