Are you mapping analog control, like for your ailerons rudder and throttle, or the button function like for views and fire button?
My right toe brake wire broke, so I use my left toe brake to apply brakes to both right and left wheels. Works fine for my setup, but I really miss differential braking for getting onto the rearm pad.
Edit:
After reading again, it sounds like you're using the pedals for brakes instead of for rudder, and don't have actual toe brake movement? What kind of pedals do you have?