Ever since I got my Dyna I had been noticing that some times when accelerating out of a corner at speed it would seem as though the back end would shift sideways just a little bit. It was never enough to cause any control issues but always enough to ratchet the heart rate up a notch or two for a few seconds. And so the hunt for the culprit began. All nuts and bolts to spec ? check. Tires ? replaced.