well if you have your bow firing on all cylinders so to speak you can take the blades and line them with the vanes and that makes it fly nicer, which obviously makes for less drag, 4 blades theres' only 1 that can be lined up. I've always done it and I don't use the ones that don't line up. I don't know seems logical to me everything's in line less drag and more like a field tip.

Ryan.