The only other two things I can potentially imagine is that maybe either tracking isn’t centered right, although it’s unlikely that that would happen for multiple launches. Still worth a shot to try ALT+SPACE. Also resetting the profile to default in the config app is worth a shot in case the settings are messed up in some weird way.
If for some reason you can’t make it work: there isn’t really any need for fiddling with vorpX settings for the game. Provided running the DirectVR scanner via ALT+L works, you are largely good.
The only thing you might want to do besides that is raising the game’s resolution, which normally can be done from the vorpX menu. As a workaround selecting a 4:3 res like 1600×1200 or 1920×1440 manually after launching the game will help in that respect.