Tennessee Tornado WAS a wicked ride. It was smoother than MOST B&M's Ive been on, which was simply crazy. Lots of air on the drop and such.
BTW if you are talking about the parabolic curve in SR's Snake Dive, Ive never ridden, but it does have the curve. When you watch the video you notice the track dips down away from you. Ive also talked with quite a few who verified the feeling of it being a huge hill. Apparently as you crest into it you get loads of nice airtime, then you get the lats, then you dive out.
BTW I would like to make Shivering, since its my all time fave ride, but yea, you cannot correctly smash it into the space provided. I have tried, and will try later again using some new math.