Just a FYI the noise was only once and it was quick after the break in process and after a short drive. It has never happened again. Not that, that means much but just wanted everyone to understand.
Thanks for the suggestions as something to look into. I can get a bore scope so that helps on how and what to look for. My other option since it runs is to bring it to the engine shop. Although my fear of them damaging (scratches, dents etc) while its there is a big fear. What's the best way to document how the car looks when I drop it off so that I may be able to hold them liable. I was thinking using my camera and making a walk around video. Crossing my fingers nothing happens.