it's the left lower screw when you're installing those radiator covers. Installed the upper cover and the right screw came out no problem but the left stripped. Now I'm going to have fun getting it out and will need a new one. Problem is I can't find it on the parts diagram, it clearly shows the upper screws but not the lowers and it doesn't help that it's in Italian. Does anyone know this part # or where I can get a replacement other than the dealer?