Are you sure its not C1 Clouding in small areas. It was applied on friday and he took it saturday. In the sun, excess can cloud up, which is residue that doesnt bond to the paint as its not needed. Just needs to be buffed off with a soft microfibre. Unfortuntely out of my control if its left. This is one of the reasons we try to keep cars in for 48 hours after C1 application, just incase it clouds.