Can't vertically center POV in VR

I've just tried vr for the first time in rf2, which was way more tricky than it needed to be, but the pov is about 5 meters above the car! I read somewhere the pressing ctrl + space should center the pov but this doesn't do anything.

I'm using the Reverb G2.

Any suggestions?

 

You can assing a button/key for centering VR in preferences

 

Thanks, I manged to find it. It's the "VR Center head position" button, mine was mapped to backspace.