My Graco Nautilus 80 child seat won't fit in the middle of the back seat, statistically the safest place for it, because of that little hump and the placement of the seat belt buckles. (No problem in Fusion.) I need a narrower car seat for that spot. I've googled lots, to no avail, found narrower seats, but not sure any will work there. Does anyone have one that fits there?

 

have you tried both the seat belt and universal anchor system to mount the seat? neither work?