The chair was fine but a washer that was suppose to be casted into the plastic arm was missing. So that meant you couldn't tighten the bolt up that held the arm on. The arm holds the angle between the seat of the chair and the back of the chair so it's really important. I ended up sourcing a nut that fit together into the casting where the washer was missing and I drove it in with a hammer and a punch. This allowed me to tighten up both against the but holding the lower arm bolt in place and tight. Seems to be working for now.