CNC Simple Probe V3

This is the V3 of my Touch Probe.
The problem: as the NO button shows a little... hardness when pressed, on multiple touches the probe slips evebn more upward, meaning (i.e.) first touch Z=x, third touch Z=x+a.... n-touch Z=x+n
Perfectly useless.....
Thus, I decided to move the probe from the side slide directly to the Z aluminium frame.
As time ago I got a bounce (a big bounce) of neodimium magnets (20mm), I used these to attach (and detach) the probe out the frame.
The case has been redra