Here are the best reference materials that I have for those that are looking for build instructions:
This video by my good friend Proji Keeb Look is probably the best one. I recommend watching this first:
And here are the steps of how I build:
First, do the switch-plate-pcb as you normally do, and once you're done, attach the mounting bracket like this:
Next, attach the controller board to the plastic mounting and then to the matrix pcb:
Next, place the post pins in the case as follows:
Next, is the most difficult part. Carefully place the switch-plate-pcb sandwich into the case, lining up the holes on the mounting bracket with the pins in the case. I usually try to line up the bottom brackets before the top brackets. Once the bottom is in, the top is easy to do because you have extra space at the top of the case to work with.
Make sure every pins goes in all the way as pictured below, you may need a tweezer to push the pins through all the holes:
Screw in the controller mount to the case:
Attach your preferred USB cable:
Close him up and that's it! Please feel free to let me know if you have any questions