RE: field vs broadhead
It's one thing if your broadheads and field points are hitting different. It is another thing completely when you can't get any consistant groups with your broadheads. First you need to get your arrows tuned for broadheads, then get them to group. Then you are ready to fine tune the bow to bring the bh's together with the field pts.
Make sure each arrows spins true, and make sure you are shooting helical or at least off-set fletching. Do not worry about lining up fletches and blades.
How can you tune a bow that throws one broadhead high and right, and the next low and left? You can't, because corrective adjustments would be opposite each other.