Has anyone had weird high z-axis value problem with LIS3MDL?

ArduCopter Copter 3.6
1

Hi,
Has anyone had weird high z-axis value of LIS3MDL?
Sometimes magnetometer calibration failed, and at the same time, it has very high z-value.

2

Is this a Zubax GNSS2? I use this on a couple of my UAV’s and they always have very high z value offsets. Relax the calibration standards and they will calibrate. I have had no issues with them once they calibrate.