Hey everyone, need some help I'm at wits end. I attached a video of it, but basically if I use my remote to pan (yaw) it causes a very slight roll. It recovers after I stop yawing, but it happens every time. It is not consistent with how far it tilts, nor to which side, though it is usually falling out of the turn and only goes a few degrees. Enough to lose horizon in flight which is killing my aerial video.

Note it ONLY happens when I pan using the remote. If I spin my drone manually it will hold position and horizon perfectly, but that defeats the purpose of having a 3 axis gimbal and retractable landing gear!

Gimbal is Arris Zhaoyun Pro 3-axis Gimbal (https://www.amazon.com/ZHAOYUN-3-Axis-Brushless-Version-Compatible/dp/B00R1F0BSS)
Carrying a Sony A6000 , all carried by a DJI S900

Things I've tried-
-Gimbal is perfectly balanced all 3 axis
-Disabled roll on RC
-Turned Follow mode on and off
-Super fine tuned PID's
-Calibrated ACC a million times
-Updating software to latest. Though I like 2.41b4 the best

I read some people had luck with putting follow mode roll at 90* but that doesn't seem to do anything for me. Maybe I'm doing that wrong?
Here's the video. Note that Roll is disabled on the remote during this whole video. You'll notice at the very start I pitch all the way up and it rolls. It very rarely does this and I'm less concerned with that as I am the yaw which you'll see later.

https://youtu.be/cFBoHJWaQBA


HELP Please...