The drawer contacts the cabinet at three points - two plastic sliding surfaces at the lower corners of the opening, and a slider attached to the aft end of the drawer that hangs on a track that runs the length of the drawer cavity above the box.

This is the kit that fixes it -

http://www.lowes.com/lowes/lkn?action=productDetail&productId=129421-76018-R7144&lpage=none

The red bit goes on the aft end of the drawer, the blue bit goes on the far end of the track, the angle holds the near end of the track to the back side of the cabinet face. The kit also comes with screws and plasting sliding surfaces for the lower corners of the cabinet opening.

Sixto
87 300D