The ends doesn’t justify the means.  I have put many prices of furniture today but if I knew what a problem this was to assemble  I would never have bought them.  The problem is the holes for both the legs and chair are aligned with each other and the swivel does not stay positioned to get the screws into the chair part.  I struggled with it for 5 hours and then 2 professionals used additional tools to keep the swivel turned.  I hope they are very comfortable