I have this Toyota stand up when you first turn the key to start step on the floor button and try and move it forward it doesn't move and the second to top light for battery level lights up and all the other lights shut off unit does not move forward but when I bring the joystick to the neutral position and then try and move forward it works just fine. I believe the joystick might be out of calibration so does anyone know the steps to recalibrate the joystick on this unit