25K factory belt. at cold start, would "chirp, chirp....chirp" insides are fine, grooves are perfect. the smooth outside is what Im a talkin' about. I changed out an idler pulley just prior and it didnt remove the chirp, the new belts eliminated all forms of noise and the whole accessory line is pretty quiet and smooth now.I will double check the belt, during my visual inspection of the engine bay the belt looked good.
Do you have a picture or example of pock marks? I usually just look for cracking on the belts.