Ok, couple things here.

You should start shooting your broadheads about a month before season begins. If your bow is not tuned then you will have these problems. In your particular case, you need to either lower your nocking point or raise your rest slightly to get your BH's to group with your FP's. Either way, its thesame thing.

If you are uncomfortable doing this, then just resight your bow to your BH's for now. You really should tune your bow to reach optimal performance. What BH's are you shooting?