DS (27 months) is rear facing in a Marathon. It is installed with a shoulder belt that only locks at the car wall when pulled taut in a fast stop situation. Well, he just figured out that he can stretch his foot out, loop it into the shoulder belt, pull the belt to his hands, and then feed it in and out of the wall. Although his seat stays steady when he does this (because it has a lock off), I assume that if we were in an accident when he was messing with it, it could be dangerous (because it could interfere with the belt's locking mechanism). I don't know what to do! I can't move him to a lap belt only situation, because the only seat in the car with only a lap belt is the middle of the third row, which would make getting him in and out impossible while rear facing. He's not very verbal, so asking him to stop has little affect, and he doesn't really care if I stop the van because he's playing with it. Add that to the fact that I have NO IDEA how long he's been doing this, because his seat is installed behind the driver seat, so i usually can't even see him while we're driving - I have no idea what to do! I don't think he'd be able to reach the belt if I turned him forward facing, but I really don't want to do that - He's only about 33 inches and 25 lbs sopping wet. Has anyone had this problem? Ideas on how to fix it?