We spent ~30mins inspecting the lens during meetup I promised to acknowledge any defects within 3 days(btr than most sellers tbh) buyer txted 3 wks after the purchase for mold didn't reply in time cuz I stopped using carou after seeing msg, I answered immediately and explained that simply too much time have passed. I didn't see any mold before listing(took pics of lens glass and added in listing). Anything cld have happened! That's the pt of my 3 days warranty(way exceeded) and inspection.