My question is in regards to arrow flight during the bareshaft tuning process. I have been experimenting with a new bow and have noticed that although my arrows impact correctly and where I aim at 20 yards, the arrow tail seems to whip left in a sweeping motion during flight and somehow corrects itself before impact. You mention something about this briefly in your EFOC and UEFOC Article and that it is your eyes playing tricks but you don’t really elaborate. Is this an indication of weak spine or is this normal? The main reason this is a concern is because at closer range my arrow does show weak spine and is not really going where I am looking. From past experience the opposite has always been true. The further away from the target I get the more I can see weakness in the spine from how the arrows impact. Kind of confused here and I have tuned arrows quite easily before, any thoughts?