First the holes on the bottom bracket didn’t line up so I had to “make it work”......I contacted the company 2 weeks ago, still waiting for the part.  After I “made it work” I realized I was sent 3 arms for the right side and only 1 arm for the left side.  After phone calls, emails and text messages I still only have one chair that works and have not received any acknowledgment of needing another arm.  I would not recommend this company because of the lack of customer service.