I would not sand those keys--they are coated with that rubbery black color over translucent plastic. Sanding will risk making the imperfection a lot worse with LED backlight shining through.Oh I see. Sorry, I have never owned a backlit keyboard so I'm not familiar with the keycaps.
Show Image(http://i42.tinypic.com/2lc3fjo.jpg)
I doubt mechanicalkeyboards will do anything since right in their FAQs they say that any defects are dealt with through manufacture RMA or you can return the keyboard for a 10% restock fee +a $9 shipping charge. (which is funny since they raised prices to cover the free shipping but whatever).This is wrong information.
Welcome to gh. You will probably be replacing those caps soon anyway.Thanks, ill probably stick with the stock keycaps for a good while though, i havent ventured into the custom keycap realm just yet :)