Here is a Keres Dynamic Adjustable Trigger in a X-Five:
https://www.youtube.com/watch?v=jH4apNgPXEw
Keres Adjustable Trigger Install:
Though I would use the method shown in my first post about the
easiest way to install a trigger...
There is No need to remove the Trigger Bar or Spring as shown in this video..
This video is good for the Set Screw adjustments
https://www.youtube.com/watch?v=H6RTYI8rebs