Few things i dont know what you have tried..but the throttle trim may be set too low thats on the controller...also the brake adjustment, loosen that grub screw and move it...also the idle screw make the carb open farther then when the brake is applied it wouldnt be nearly as closed as it was...Dunno..i dont have brakes on my evader and havent sense 2 weeks i got it lol...