set right MFCD down page to EPI2, if BRAKE set to NORMAL, and no wheel BRAKE applied, pressure should be close to 0;
check no Axises other than pedal device are assigned to wheel BRAKE, in your setting -> JF-17 -> Axis command;
(mostly, there are axises from other devices assigned by default, any of them applied, wheel BRAKE will be ON);
if you are not sure of this, post a screenshot of your JF-17 Axises settings please;
clear ALL wheel Axis BRAKE settings, use key w and check EPI2 L/R brake pressure again;