RE: Field Point vs. Broadhead flight/grouping problem
Could be a few things changed in your rig from last year such as cam timing and poundage due to cable/string wear. If they are a new type broadhead they could effect the balance of the shaft differently. For the situation you describe, tuning my RH bow, I would very slightly (.050" or so at a time) move the rest to the right (in toward the bow) until they start grouping together.Very small changes will move the broadhead groups more than they move the fieldpoint groups and at some point they should impact very close to the same point. In addition, your groups should tighten up as you get things more finetuned.