I am having problems with broadhead accuracy. The arrows appear to be flying dead on only to veer to the left at the last second. This occurs with Muzzys ( 3 blade and 4 blade ) and G5 Montecs.

I have paper tuned using fieldpoints. Should I paper tune and walk back tune with broadheads? Or should I simply readjust my pin sites as the broadheads group fairly well, just 2-3 inches to the left of my fieldpoints?

Also, would increasing broadhead weight help? Perhaps changing from 100 gr to 125 gr. My current set up is a Parker Trailblazer bow set at 60# with 28.5 inch draw length. I am unsure of the weight of the arrows. I shoot Gold Tip Hunter XT 5575. They appear to be the right arrows for my set up according to the charts I have seen. Any help would be appreciated. Thanks.