I have no idea how to put this thing together. First they didnt give me an allen wrench. They gave me a huge disc that may or may not be the washer. It has washer on the hardware list but its huge and doesnt fit where the illustration indicates. According to the pictures, it should go between the base and locking bolt. How The locking bolt is too short and the washer is so large it sits on the surface of the base instead of sinking down. According to the directions this should be easy to assemble but with the items they gave me I dont see how they all fit together. And ... Ive assembled a lot of furniture more complicated than this.