I have a d3 that wont run all 3 boards. I tested all 3 by swapping the wires from the control board and all 3 work. But if I have one plugged into the 2nd port on the control board that one will not work. So I have a bad control board right? Also I notice that the control board has 4 ports on it can I enable the last port? or is it for something else?