Hello, I have taken the habit of having a precise adjustment for the limit switch of the z axis of all my printers.
I searched for one of the ender 2 pro, but I didn't find any, so I made my own design and now I share it.

Use 1 M4 screw about 30mm long and 2 M4 nuts too.
 

I am including the original Fusion360 file in case someone needs to make further modifications.