Wiimote plus + external magnetometer

[Vininess]

Hi

I watch your videos and i see you know much about the giros on an android

But i trying to use a wii remote plus to track the yaw, pitch and row and the driver4br to track x,y,z so i noticed that the wiiremote plus, don't have the magnetometer to recalibrate the controllers, it uses the sensor bar, without the sensor bar the controls tends to drift after a hard shake or shorty time

So my question is, is it possible to soldering a magnetometer to get this recalibration or you have any idea what i have to do to solve this issue?

Thanks a lot