Thanks for taking time to read my issue.
I believe it is another definition that you are referring to: the Dynamic Harmonic Notch Filters. Yes, I did, unless I had set it up inefficiently.
We tried referencing the Vibration Damping page to see if Y-axis vibration can be further reduced, but were not quite lucky.
So, one of the examples of our Y-axis vibration issue. Arducopter 4.6.3.
