Dave, The current tracks are correct for the AZ strip and North rim area, right? I have the choice of 990, 630, or 450 so need to decide which bike is right for the job! Keeping an eye on the weather helps determine if we do the AZ strip or the North rim area this May! How do you rate yourself as a rider? I have had guys say a route is easy but they are Enduro racers and can really fly!