If you're on the "Lyrics & Knowledge" page & 'right click' to add it to favourites, it will, in future, take you there.
Even if you scroll down to BS and try to set in favourites it will set up to take you to 'lyrics & knowledge'.
If you view the BS section by clicking the link 'BS/General Discussion threads are listed below (click) ' and then try setting as favourite, then the favourite will always take you to the BS section.

Simples :)