EyeGaze HeadSpace not working in builds

Heyo yall,

I've been messing with Eye tracking lately and I'm trying to get our avatar's eyes to move using the EyeGaze system. This seems to work perfectly in editor (Unity). I've got it set to HeadSpace mode and the eyes follow where the user is looking as expected.

However, in builds, I get a different result. To me it seems to be the same result as if I had it set to TrackingSpace. The eyes will move fine as long as the head position is looking forward, if you move the head at all, the eyes no longer follow like they should.

Anyone run into this problem that may be able to help? I'm not sure what's going on and I've been fighting it all day.

I'm just using the OVREyeGaze script.