I bought an iphone 4 two weeks ago and since then I've realized that the headphone jack is crooked. The metal piece that the headphone jack sits on dips in a bit near the black band connecting the two metal parts and this causes the top of the phone to not be perfectly flat. It's hard to tell from a picture about the unflush metal parts, but I think you can see that the headphones go in crooked (all headphone I've tried go in crooked). Is this pretty minor and I should forget about it? It works perfectly fine. Or should I return this as a cosmetic defect?