from now till opening day i will only shoot broadheads. this year i have dramatically increased my draw weight as well as speed with a new bow. what i saw today was erratic flight and not that great of groups on target. before i was pulling 55 pounds on an old bow, and my broadheads shot identical to my field points, i guess because of the lower speed. what i want to know is what exactly is broadhead tuning and how do i properly do it? after the first few shots i turned the blades on the broadhead to where they match up with the vanes. this gave me 10" groups @ 40 yards. with field points i shoot 2" groups at the same distance. help!