I know what you're thinking, same as I, that it should flatten out when you torque the head down and it probably will. The actual reasoning should be why try and use a part with defects and it possibly failing. The result being that you have to shell out the money for a new one, have more down time, and having to do the work twice.
If it were me, I would return it and get another one, or use a different vendor just to be on the safe side.