I make the XL setup to look just like the sandevice setup screen. In your case, I am not sure why you are starting a new universe for every output port. I would have just let the sandevice dictate the end channel for output 1 and then start output 2, same universe and plus 1 on the channel. Then on the output 4, it will end up with x universe and channel 'y'. When you set up XL, then have it use 510 channels for each universe and you should be fine. I could not see the model setup but trust that Gil answered that one for you.