Nothing's wrong with the original design, it's just that the original case is somewhat costly to reprint just to closely match with the measured torque of the rotor. And that can create unnecessary waste.
This model enables you to closely match the case's printed torque value to the measured torque by printing the case first, then print the plate after measuring the torque.
The plate don't have any numerical value. Add them manually using prusaslicer's negative object feature.
The author remixed this model.