Hello there, I am curius how the main sticky sidebar works. It stops scrolling at certain point but I cant't find out where can I change this point or disable this. The thing is that it stops scrolling at really weird point (almost bottom of the second most read article image - on homepage). Is it possible to change it or disable it?

And second question. Pardon my stupidity (: but I can't find where to chane these sidebars for different types of pages. I want a same for all pages, but I used a demo import and then rewrite all articles so there is different sidebar for articles and I guess even for pages but I havent get to creating additional pages yet. So I would like to know where can I change this. 

Thanks a lot.