Lets blow this out of control guys, first Brian, I did not demand a replacement, second, if really didn't like Ac racing, I'd tear my new clutch out and toss it, remove them form my signature. I've never bashed the performance of the motor, its great, and when I first contacted Ac, PR I didn't get any type of reason or explanation for this. Its amazing the PM I got, just opinions, and if Jason would have told me that its a new material etc then thats fine, but Jason don't you remember telling me that you had your 3 motors apart and none of them look like this? This is why I thought this is an isolated insident.
Again I am not disappionted with the performance of the motor, and now that others have pointed out what it is, and the link (thanks Jason) this could have been resolved, but I had to go online to get the answer.