Gear VR shows not centered camera in Unity 5.6

I used Unity 5.3 and it worked fine, i showed a circle animating when selected what the user wanted but in 5.6 i noticed the raycast i use, which is a ray with the position and the camera transform.forward points a bit lower than the center and dont know why this happens, i realized there are two new options in camera stereo distance and convergence, tried changing them but seem to make no changes at all

Edit : solved it using the left camera instead the center