This is an understatement. I've only been operating one side of the mountain, as it's super difficult as is. I've been trying to give it a whirl over the past few days, but I keep running into a cascade, which, I assume is their word for stacking. The instructions clearly explain the goal of clearing a cascade, (quickly move all sleds through the station after resetting the emergency stop...) but the explanation stops there. The lift stops working, and I can't figure out how to advance the carriages though the station. Anyone have any ideas as to what I'm doing wrong?