I just tried to put DD Marathon in our van. She's been in the snugride, but is about 1 pound from outgrowing it. I put the marathon in rear facing, but it hits the back of the driver seat/or passenger seat. It would work put the person in front then has to sit very straight up and down. When I move the drivers seat back (reclining) it hits the marathon and makes it move to a less reclined position. Any help?