Trying to track down why this keeps happening every couple of months. Machine will start, but then hydraulics won't work and wont move. When this happens i call the local service dealer and they come out and reset the computer to the controls and it seems to work for a while. Costs $400 each time and i've had it done 5 times over the course of a year and a half. They aren't sure why it keeps happening. Any suggestions? Short somewhere? Thanks