One of my jobs is to read car seat owner’s manuals. All child passenger safety technicians should crack open a manual at some point; in fact, they should look at a manual every time they install a car seat. No one’s that good, lol. Car seat manufacturers issue revisions and updates to manuals on a regular basis. Sometimes a manual is revised because information changes; other times it’s updated because two different sized fonts were used in the production. You won’t know this unless you compare manuals and it’s tedious, tedious work. Snoooooze.