Hey guys,
I've had my came 7800 balanced for about a week now, and it was working just fine. Then today, I powered it on and everything was working until I pitched it forward. Once I got to about 30 degrees it started shaking, then the whole thing spun around the yaw. I turned it off, confirmed that the yaw axis (and the roll/pitch axis) was balanced. It is fin when it's off, but the moment I turn it on and pitch forward it goes crazy.

I didn't do too much to the PID as it seemed to work fine out of the box. Alternatively, I tried to autotune everything to see it that would work it out, but the settings it chose were horrible. There was no stability or precision, once I turned the handles, it broke axis and drifted left or right as it if wasn't strong enough. But that's a separate issue, anyone have any ideas for fixing my pitch?

Also I'm using a sony a7s with canon 16-35mm lens. It is front-heavy, but I was still able to get it balanced.

Thanks!!