"What you really need to know, but won't find out in the instructions: each sliding door set has four hangers (2 for each door), and of the four hangers two are labeled with a #1 and two are labeled with a #2. The rear door must have the #1 hangers and the front door must have the #2 hangers. If you don't do this the doors will rub together and jam. Why they couldn't have labeled the each pairing of hangers "F" and "B" for front and back, and why they couldn't have stated this crucial information more clearly, I don't know."