A: You can tighten up hinges from top and bottom or from top but some customers have a problem tightening from top. I am not sure why but I am guessing that a certain type of toilet may have an issue. You may need contact toilet company to find out whether your toilet requires only a certain toilet seat.
A: Child seat is not slow close. Only adult and lid are slow close but when child seat is up on the lid, it can go down as slow close.