One of the pieces never felt like they were tightening on the others and the metal piece kept popping out in the 2nd to last step.  Ordered it a month ago or so, contacted customer service explaining what happened.  They sent the metal pieces instead of the piece.  Finally got the new piece and same thing happened.  Didn't seem very steady.  Taking some E6000 glue and hoping that will keep the piece in.  First time buying from wayfair...don't think i will be ordering from wayfair again.