I know there have been threads about this but I can't seem to find them. There are safety issues of the chest clip being too high, right? C kept moving his up to right below his throat today. I tried placing it too low to see if he would just move it up a little, but he kept moving it all the way up. We spent a good 25 minutes of him screaming and me stating, "No touch" every time he went to move it while parked. He eventually gave in but I have a feeling this may continue every time we're in the car from now on. It is necessary for me to do this though, right? There is a safety concern of it being that high?