Assembly was quite easy.  However, the plastic belt that controls the vise jaw was damaged upon delivery.  I called Black and Decker about this issue on Nov 15, 2012.  The representative said the belt for Workmate WM425 is on back order. I told her to order it for me anyway.  To date I have not received the belt.  The belt does not show on the parts listing nor in the assembly manual.  Not having the belt in stock suggests to me that it may be a common problem item experienced by users of this portable workbench.