definately Pat its about feel. sometimes they just dont feel right, its like if you try to bend them to one side but the shaft wants to go to another. There are some that have straight grain but you can still feel this so just check them. A little runoff at the end doesnt seem to hurt the shafts, specially if its not to severe. To make sure put lots of stress on them, like Pat said, so much is feel. Once you bend the shaft you kinda feel if it will break, or if you hear a crack dont use it.