Placement of vanes or feathers on the shaft.
I have bought arrows from several different shops and I started to fletch my own arrows with an Arizona fletcher. What I have noticed is that depending were I go or if I fletch my own arrows, that the vane or feather placement is different. When I use my Arizna fletcher the vanes are usually down the shaft about a quarter of an inch. My question is how does this effect my arrows.