Does having a 3% offset right helical, tighten groups on Blazer vanes or not, vs straight vanes ? Before I spend $150 plus on new arrows, I want to get it right. I'm planning a 2015 archery elk hunt & these arrows will be for that hunt. But of course I will use them for whitetails also etc.. Thanks for the advice ? Its kinda difficult to test vanes before u spend a lot of money on arrows.