I need to drive 3 LOR boxes off the serial port of the F4V2 to run my rooftop snowflakes. I have the LOR boxes daisy-chained to the serial port, I have the 3 jumpers on the F4V2 set to LOR, in the serial outputs section I have output #1 configured as DMX. The LEDs on the LOR boxes are flashing. When control is established they should turn solid. I unplugged the cable from the F4V2 and connected it to my LOR dongle, the LOR hardware utility sees all 3 boxes, so I know they are ok. What am I doing wrong?