although i dont know what is the Pontos kit consists of, i know that i have had PE sets that dont list everything. I have a flyhawk kit that doesnt list everything, so i had to kinda figure things out on my own for a few things. 
One of them that is not listed on mine happens to be railings, so i am in the same boat. On a side note to that, as long as you match up what the directions say, you should be fine anyway. I have heard that it is best to do railings in smaller sections anyway because of shrinkage/expansion will cause railings to release. So, if you do the unmarked parts, just do small runs and make it work. it is really what i plan on doing with mine as well.