Just curious to see if anyone has a car seat in the middle of their RRS? Currently have two in my x5m. Front facing behind the passenger and a rear facing infant in the middle. I'm worried that when its time to turn a full sized car seat in the middle the hump by the headrest would get in the way of the car seat sitting back all the way. I'm planning on another Diono Radian RXT and would prefer that to be in the middle. Main reason being when there is another passenger in the rear, its easier for them to sit by the window as opposed to squeezing to the middle. Anyone have experience with this?