Okay, forgive me for my ignorant questions. I am still trying to learn about tuning my bow properly. So is there away to determine if I will "over-spine" my arrows by adding extra weight without having a spine tester? I shoot cheap arrows, something that I regret buying; however, since I bought a dozen of them, I am going to use them for awhile. They arethe Cabelas Carbon Hunter and are the 65/80's.I have them cut to29 inches and are right around 20.5 g witha nock, insert, and 2 inch blazers. Thanks guys, I appreciate it.