Have 3 solix 12 units. One unit up front just chirp gps and two at console 1 chirp gps and other chirp mega si gps. Have 360 up front and I pilot link all contacted using 5 port hub. Question on how do you make one of the units the main control head? Also when you get all this networking setup and want to do update won't you lose all network settings when you restore factory details? Thanks.