I love my late 2013 13" rMBP, but one thing I cannot stand is the horrible grips on the bottom of it. I don't know what apple did differently with the retinas, but on flat smooth surfaces like my desk, its slides around like crazy. Trying to open it is impossible because the force will make it slide straight right the desk and it often slides around while typing. I'm assuming a lot of other people have the same issue. Any possible way to help it grip down?