I bought 2 of these chairs based on the reviews I saw here.  It took about an hour to put both together. 
Unfortunately each chair came with an arm with defects. It looks like perhaps the pilot holes were drilled to much and the hole popped through the top side of the arm. 
I emailed customer service 2 weeks ago (same day I purchased) requesting 2 replacement arms and I have not heard back. I am also not able to get through to anyone on the customer  service number. 
I have also emailed BJs (where I purchased) in the hopes they may be able to help resolve. 
I’m not sure what my recourse is at this point.