Maybe I'm blind but I can't see the deadzones for the pedals, only the wheel. I'm used to have a bit of deadzone on my brake pedal because of not the best contition of it but I just can't find where to set it.
Hold your pedal down to the point you want to end your deadzone, click the option above where you see the graph... Click "pedal min" or similar - can't remember I'm at work ATM. You can set min and max values for all variable inputs.