These chairs are stunning! I ordered 3 sets and only 13 had issues with leveling (manufactured in April vs August) but it wasn’t a deal breaker for me because they level out when seated. They took about 30 minutes per chair to ensure they were properly tightened. I recommend using a more ergonomic hex wrench because the small one provided gets hard to use after chair 2. I’m ordering two more because my existing chairs aren’t as stately.