Anyone played the troubleshooting game of Diff Lock not engaging and/or 4WD not working properly. I can punch the rocker switch and/or diff lock lever, and I hear the actuator moving in and out as if it is engaged. As you ride or start bike, it goes off. I thought there was a loose cable on diff lock lever but that seemed to mislead me to some degree. Front and Rear diff oil has been changed recently so not like its dry.