Recently I started having a problem with the helmet mounted display for the payware F-35. Normally there's a bit of
the HMDS symbology that you can either lock to the forward looking HUD display, or you can lock to the helmet's
point of view, so it will move with the helmet.

But recently, when I unlock the free roaming symbology, instead of staying fixed with the helmet's pov, the symbology
just slowly drifts around the cockpit all on it's own. Sometimes, out of the blue, the drifting symbology will suddenly lock
on to the helmet's pov, and work as normal for the rest of the flight. But next time I start the sim, the symbology is back
to drifting around again. I can still choose to lock the symbology to the forward looking display, but the helmet pov symbology
was kind of cool.

This only just started happening and I can't figure out why. I've tried various fixes, and even tried re-installing (version 3.50
+ updates 3.51 and 3.6), but nothing seems to work.

It's probably something simple that I'm not doing, but I can't figure out what. If anyone has any ideas, it would be appreciated.

Thanks loads - Rob