How do I monitor while using all 8 outputs for summing?

[whittybeats]

Trying to figure out how to monitor while using all 8 outputs on the 003. I have each output routed to a Summing Mixer with 8 inputs and thought all I had to do to monitor was have my speakers plugged into the Alt Output on the 003 with the Alt CR switch turned on. Not getting a signal this way and having to use the Main Output leaving me with only 6 outputs to Sum with. Am I not setting something up properly in the I/O Setup Window? Am I going to be limited to only 6 outputs if I want to monitor though speakers instead of headphones? Any help is greatly appreciated!