I received my Surface yesterday and I must say I absolutely love it. I have been using it primarily in tablet mode without my type cover. I noticed that on the back of my surface there are little air bubbles. I can feel them with my fingers while holding the surface which gets annoying and I can visibility see them. Does anyone else have these small imperfections on their surface? Would it be worth it to return the device? Would that be considered a legitimate defect by Microsoft thus allowing me to exchange my device?