Had a similar problem as in post one, i had the HMD on an axis control each time i turned it fully on after a second it jumped back to about one third on, the white line on the knob linning up under the h hmd sign, when i turned it off after a second it jumped back to the h mark.
Cleared the axis control and used the mouse to scroll the same happened ending in the same position.
I do not have any keys bound and now no axis, using DCS OB MT.
The mission iwas flying was too long for track.
using X56 hotas