Sorry about those defects on the arm and hand, contact Kit and we'll sort them out for you. The arm can be easily removed after you heat it a bit, and then you'll be need to heat the new one to insert it as well.
As far as the hair, that's not a defect, it's how the sculpt on it is, but the light reflection is making it look like it's chipped or missing paint. If you inspect closely I'm sure you'll see the paint on it is fine. You can see in the picture bellow the reflection is causing the same effect in the exact same spot you have in your picture.
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