RE: weights vary from arrow to arrow?
I think it depends on how far you shoot your arrow and your personal take on the matter. If it bothers you, then add a few teflon washers to your arrow. To even things out. I think that they are about 2 grains per washer. If you are only shooting out to 30 yards, I don't think that you will see too much of a difference. If it were me, I wouldn't worry.