So you have a combo of pixels and LOR boxes? Like I said, I'm still just barely ahead of what you are doing too. Switching over from LOR to xlights and f16v3. I do have my jumpers set to LOR on the f16 but I set all the addresses on the LOR boxes for DMX mode and also changed all the LOR channels in the LOR software to DMX mode. Are you importing sequences from LOR software or strictly creating in xlights and then using your LOR boxes with the f16? I put my channels in absolute mode so I don't have the "box 9, channel 1" thing. It's channel 1 straight thru to the end. For my falcon setup, I have universe 1 on com 3 set at start channel 1 and then universe 2 set at start channel 513. Sorrry I can't be of more help, but if you want to keep the "box 1 channel 1" standard LOR channel numbering scheme, I'm not sure how you would define that in falcon. I just went with the DMX and absolute numbering route. So, for example, your universe 18 would have a start channel of 4453 and not 1