I had to return the first purchased chair as a piece was broken in the box. I exchanged the first chair for the second (current) chair and was successful in installing it. So far the chair is suitable.
This chair looks nice - not too big not too small. It tilts back if you tilt back but I can't seem to get it to stay exactly where I want the tilt to "stay" or sort of lock in. I turned the knob on the bottom all the way but I just can't seem to get it where I want it exactly. I'm REALLY picky though because I have one hip joint that is finicky so any normal person would probably love the chair. I really like it otherwise so I am going to keep it.