Every shift nails the same locations while the fringe areas stay relatively consistent. I'm no expert but I do have to pay attention to trends and details in my work and what I notice is despite all of the shifts and changes at any hour the end results aren't changing drastically so to me that says we probably have seen something close to the final solution save a few tweaks. Again, hope i'm wrong but if my area gets 2-4" that will cover everything and look gorgeous and I can be happy with that.