So I've had two brand new nexus 6ps that both did not lay flat on a granite counter top face down..they both have an ever so slight wobble if I pushed on opposite corners.. So I just grabbed it and twisted it flat again and now it's perfectly flat... But this worries me because I did not apply a lot of pressure and this shows me how durable these phones are ... You think they would be likely to be my more over time? Anyone else noticed this