Hi, I have had the 2012 Macbook Air, 11" the lid seems to be far too loose is this the case for anyone else? Also, do you ever have it when you open the lid and the screen constantly refreshes? I initially ordered the smaller capacity Macbook Air, then realised i wanted the 128gb so changed in store, but they didn't swap over the 3 year warranty apple care, can I get this resolved in store? Just realising today when I put my serial in, it shows only as a one year warranty. Made a genius appointment at 5.30 today, so wish me luck, will they just replace my Air on the spot? I have backed up everything. Also, is there any chance where you can swap for say the 13" during the same process and put in the excess money? - Just a long shot.