After having the chair for a while and using the different lift components and tilt components I am not happy about the mechanism it will make sudden jerks and snapping sounds and it will come down a SKU. I am expecting that to happen when the cheer is over five years old not on one month. So I am really worried about using it for the fact that it’s going to break when not expected. I am very disappointed in the mechanism. The chair itself is comfortable but the mechanism is disappointing