In addition to a missing drawer panel, two of the pieces came with PRE-INSTALLED drawer rails that are used for the drawers to slide onto. The problem is that one of these pieces came pre-installed with the incorrect rails so that the drawers do not slide in correctly. Check out the pictures, see how the correct ones have the wheel at the bottom of the rail. The incorrect one has the wheels on the top. I've quadruple checked that I installed every piece the correct way. There is no other orientation that the piece can be installed which would allow the drawers to slide in correctly. The used the same rail on both sides, when they should have mirrored them.

Disappointing after spending 2 hours building it just to find out that the drawers won't slide in right. :/