Yaw setpoint failure due to Magnetic Field

IĀ“m building a Standard VTOL with the Fun Cub Quad VTOL airframe. The aircraft behaves ok in pitch and roll but keeps trying to make a yaw clockwise maneuver when its in the air even when the yaw setpoint should be zero. My external GPS/Compass is on top of the vehicle away from other electronic devices. IĀ“ve twisted the current cables that go from the distribution circuit to the motors and IĀ“ve placed them as far as posible from my pixhawk. The thing is that I keep having interference and noise when I turn the motors on. Any suggestions??

The Log file is this
https://logs.px4.io/plot_app?log=6dd825f6-3677-415b-b2b2-0ab4b13467f1