Since I dont have access to optical sensor and PCB, I go ahead and try new Tap with Unklicky. I work very well for me, I can not say it can archive the insane result compare to sensor but for limited tools, it works even better than the Unklicky probe! It's consistent!
Markdown (GitHub flavored):
probe accuracy results: maximum -0.276264, minimum -0.283764, range 0.007500, average -0.280764, median -0.281264, standard deviation 0.002449