you need to pull your headlights too, I just use the L shaped pin that holds these in once you pull them out GENTLY pull out your grille as far as you can and reach in the middle grille slat with the L pin right where the bowtie has the middle square. By middle square I mean the one in the middle of the emblem, it is a square with a rectangle if you look at it. (paralellagram not rectangle) these are where the clips for the tie are. you want to push them in towards the middle of the emblem. DONT BREAK THESE, THEY ARE A RIP OFF TO REPLACE. On second thought.....this might be better accomplished after you take the entire grille off once, so you know where it is....
EDIT* Look at my signature, the clips that hold the tie on are right outside of the vertical white lines I painted, exactly where the middle black line is. Push these towards the center.