I just recently bought a 2010 Elantra Touring and noticed the passenger's head restraint sits much further forward than the driver's to the point where it is uncomfortable to sit in the passenger seat with it installed. When I removed the headrests to have a look, they are identical except the passenger headrest's metal bars are coming from the back of the underside of the headrest while the driver's metal bars come from the middle (causing the passenger headrest to be futher forward). Are the two headrests supposed to be the same and I have a defective one? Or is there a reason they are different?