Different headers in different sections don't seem to be supported

The same goes for when one uses DocX.Insert( to insert a new document - all headers seem to be getting combined.

In my particular case, I need the first two pages to have a different header than the rest of the pages, but I cannot find any way of doing that using this package right now.

If someone could give me some guidance, I could see if I can add this functionality myself, but as of right now I wouldn't know where to start.