This was a little more trickier to build as opposed to the Series C desks and bookcases. The main part were the drawer hardware. The screws provided in both boxes were not correct to use to allow the drawers to open and close. 
Also, the screws used to hold the left and right frames of the pull-outs were too small and caused the frame to pop off several times. 
A quick trip to the hardware store remedied both issues as I believe the wrong hardware bags were supplied. 
Nice cabinet though, would buy more if needed.