This is probably a stupid question but if two carbon arrows have the same weight, will there spine be relatively the same? More specifically, here is my situation. I am currently shooting Beman Hunters 400's which are at 9.1 grains. Furthermore, they are 28" and I am shooting at 60 lbs. I was looking at trying some Gold Tip shafts but their chart recommend 55 lbs-75 lbs would be 8.2 grains. However, I would prefer to stay in the low to mid 9 range as far as weight. Though they have a 8.9 grain arrow it is recommended for 75 lbs - 95 lbs. Do I need to pay close attention to manufacture recommendations or purchase arrows by weight? Due to the fact that different manufactures use different materials and processes, I would assume that you can not judge spine by weight alone. None the less, I would appreciate some education and/or advice for determining correct spine and weight when comparing various arrow shafts. Thanks Again, Ron