Since it's prolly not hurt to the point of no return "yet". I'd call Scott's shop and tell them what you found...I know most shops don't guarantee racing engines but since you caught this early and it hasn't failed they may take care of this and besides they may want to know what failed on it so they can be on the look out for this. After all they have a reputation at stake....they would probably even cover shipping just to find out what is going on with it.
One other thing...I have a friend that bought one of their 496 short block assemblies, it prolly had a season + passes on it. He just had it rebuilt by a local shop and they found signs of this on one of the journals and bearings when they took it apart.....it wasn't bad but he said you could tell things appeared to be tighter than they were supposed to be.....I believe they had to take it down .010 or more because of that...