While following the instructions explicitly. Many of the pre-drilled holes were not in alignment with the boards that were to go in the place with them, so at the last point when the back X's are fastened into the back rest of the frame, one of them wouldn't fit at all and I had to unscrew most of the entire swing in order to realign some of the connections. One of the armrest would not even connect to the backrest board because the holes in the backrest board were drilled in the opposite configuration from what they were supposed to be and I had to redrill those holes in order to set the armrest correctly.