First off, low budget racer here. Tech question on ring and pinion. I have a bull dog rear end with only about 10 shows on it. Ring gear looks excellent, not pits, grooves, scoring, nothing. Teeth feel very, very smooth. Pinion...all looks good, same as ring gear, except one small, approximately 1/16" round pit mark. Not very deep, just enough that you can feel it. Is this something to be concerned about or should the ring and pinion be changed?