Firstly, I like to tinker, so I have been shooting a 4-fletch heat with a helical. I rotate between iron will, black hornets, and slick trick Grizz tricks and start to have issues with the black hornets at 40+ and the Grizz tricks have some problems at around 40. so likely the next easiest thing to do is to get a slightly higher vane profile. (YES MY BOW IS TUNED) these are the 2 that people generally recommend for fixed heads. I have some blazers but they really are louder than most vanes.