It was possible to pay attention to the centering in production. First purchase. and stupid marriage. How to align the chair - I have no idea, if only with a crowbar. Got pros: Thoughtful ergonomics, good armrests. The chair is designed for big growth! from 180. Different cons: Axis tilted a few degrees. It is felt. I had to get used to . there is no time to change. Probably in the future I will consider more serious firms.