You need to tune (adjust) your rest and/or nocking point to get your blades to hit with your field points. To fix your problem, you need to move your rest up and to the left. Do this in very small increments until you get your broadheads grouping with your fieldpoints. You'll notice with each correction, that your broadhead group moves further than your fieldpoint group. Keep at it and they will eventually come together, but might not be in the bullseye. Then, all you need to do is adjust your sights and you'll be set. Look at this...
Also, spin test those muzzys to make sure they're straight. No fixed blade head will group well if it wobbles. CD.
