After a rough landing I checked the Air and everything looked ok, two days later I'm cleaning and doing maintenance on the Air when I saw what I thought was a smudge on the lens, got out the cleaning kit for it and turns out it's a scratch, a fairly deep one, enough to effect footage so it has to be fixed. My question is this, can I do this myself at home, the good weather is slipping away and I can't bear shipping it out