I bought a macbook pro a couple of days ago and just noticed that there is a white grayish blemish on the right side of the frame. It's somewhat visible. I tried to clean it off but it looks like the "paint" is sanded etc. Should I return it or keep it? I paid over 2k for it, I feel that I should get a good quality machine. I'm thinking about keeping it because it's just a small area that has the blemish and it's not that visible. What would you do??