They're trying to kick it up a notch! This, of course, is a recipe for disaster. Adding to the mix is the fact that they are going to shorten some curves to make up for lost time. Was there a reason for the bigger radii in the first place? Could it have something to do with rock squeeze and the machine binding? This is probably all lost in the mists of time, so tighten up those curves, damn the torpedoes, and full speed ahead!