Reducing magnetic interference without uBlox

compassmot script measured 68% interference in my case…

I was thinking about moving the APM board from the centerplate to a platform about 100mm above the main plate to increase the distance between the built-in apm 2.5 compass and the power wires - That is what You get when You buy uBlox and put it on a satellite/stick mount.

Do You guys think it is OK to do so or maybe the distance will affect normal flight because the board would be too far from the rotation axis?

That should help, worth a try.