Can someone explain what is the difference between EZ track Turn outs sections but identified as #4, #5, and #6. Why are these numbers for ?

I bought a Trestle and Bridge Set Item no 46-1226 but unfortunately the instruction sheet for assembly is lost. Does anyone has a scaned copy from this instruction sheet or can tell where to get it

I have a problem, just finish my first lay out, wired everything started my EZ Command, checked every joint but my loco's always get derailed. Any recomendation ??