Originally Posted by OffRoadJunkie

This agree with. I would shim a rotor to be as close to the sensors as possible. The difference is minimal, but some people swear it makes a difference. I have not seen a difference in performance by making the rotor asymmetry better than what it was stock. I showed this in one of my videos. Adjusting the timing does not affect the rotor asymmetry, end-bell deviation, or the hall-signal deviation.

• End-bell Timing and Deviation: Shows the sensor timing for each phase (A, B, C) and their deviation from each other. Lower deviation indicates better sensor alignment.
• Rotor Asymmetry: Measures the balance of the magnet's north and south poles. Lower values indicate better rotor manufacturing.
• Hall Signal Deviation: Measures the consistency of the signal from each Hall sensor. A lower value is better.

When shimming the rotor, some will say that it is better to have the rotor centered in the stator for better performance. I have been thinking of doing this test for a while. Maybe it's time I did it.