When I look left or right, it no longer moves. Just for reference, I'm not using XRnecksafer...using SteamVR. I have not tried rebinding the center button.
Thanks
Edit: VRNecksafer "HMD Yaw" is working before I launch DCS. Once I launch DCS, the HMD Yaw remains at zero regardless of head movement. Had no issues before DCS 2.9.