The directions both written and visual were confusing.  Probably for a different or earlier model.  The stability feet that came with the chair has 2 screws/2 wingnuts.  The directions has 4 screws/4 gaskets. The arms in the directions are labeled backwards left being right and right being left.  After figuring out everything chair went together easily.  The chair is comfortable and easy to operate.  Only drawback is the beverage holder in the arms.  The tend to fall open when chair is in lift position.