I was Animal Kingdom a few weeks ago (wanted to go on Dinosaur before it closed) The crowds were really lite so we decided to go on Primeval Whirl. That ride is awful. THAT IS THE MOST JERKIEST THING I'VE EVER BEEN ON, worst than Space Mountain. I do not remember it being that jerky when I first went on. In my opinion, that ride was just a cheap way of getting a thrill type ride into the park.