FIX - to this issue of the horizon to being level
-------- (For those who don't mind voiding their warranty) ---------
This is not a fix that many people will want to do as it is slightly destructive to the case and there is potential for damage to be caused, however if you don't mind the risks..
My temporary fix to this issue was to drill / melt to holes into the case just above the two gyro chips on the main board. I then found that I could CAREFULLY apply pressure to the chip/board with a NON CONDUCTIVE object through the hole and the horizon would then become level. The chip closest to the buttons was the one I had to manipulate.
(There are very small components right next to this chip so Be careful not to slip or miss and break these off if you try this).
Rather than putting holes in the case you can fold up a bunch of paper and wedge it between the cover and the board, that way you can squeeze the case to push the chip down, this is my new method rather than risking missing with a pointy object.
Hopefully a Firmware/Software fix is created for this soon as the headset itself is nice but the software is letting it down greatly.
Pic of the gyro's here. https://postimg.org/image/5evhkorrl/