Insert the m3 square nuts in the following parts.



This is where the extra square nuts come in.
There are six slots on the CX-1 hub for these nuts to go into.
These are the screws required to mount the hub.
I never got a measurement of how long these m3 screws were.

I mounted mine like this because there was a lack of necessary hardware.

The CX1 hub screws into the top of the printer where the old spool holder was. 

*The CX1 extruders unscrew by the plastic cover for mounting. NOT the stepper motor screws. Example*

This is my orientation.