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RATE outputs and imbalance in pitch

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Hello everyone,
I did a hover test and little bit of pitch roll and yaw movements in Loiter mode to find out stability and oscillations. I observe that RATE.POut is continuously at 0.05 in hover and later reaches 0.2 when very harsh accelerations and decelerations are applied. After reading Arducopter docs and discourse discussions from other people and learnt that this offset corresponds to 5% of weight imbalance in pitch. I tried lot of things to reduce this imbalance but according to design constraints it is not possible to improve beyond this value of weight imbalance. I just want to know whether this is acceptable in long run or not in applications where the drone is not pushed hard (surveillance, delivery) as compared to Racing quads.
Log attached below.
https://drive.google.com/file/d/1RzLJ1BUq7JMZDSgj8ZBtF-JNNhdvBG-c/view?usp=sharing

Can someone please comment.
Thank you

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