[40Coupe]

I talked to tech at Richmond today and they said button it up and run it. Everything I described is normal. He said 12-bolt gears especially will make some noise on coast. The teeth apparently "lay over" slightly after the first pass and create some coast side interference.

Yes, I used a very fine abrasive in my blast cabinet to remove the coating. I was told that the black coating would quickly wear off and becomes an abrasive inside the housing.