I just split this topic, bumping a two year old topic is of no help to the previous posters and 9 times out of 10 won’t be helpful for yourself either 
I’m not exactly sure what you are after or you have already fixed it as your forums look ok.
To answer the specific question though, make a copy of your themes page.php file and rename it to bbpress.php, though as stated I’m not sure you need this.