I know it's not the first time this has happened, but I don't remember exactly what light was affected. There was a thread last year I read about metallic crap getting between the body and contact ring in the head. Now I don't remember if the problem was parasitic drain, or the light not turning off or what. If pieces of the plating keep coming off, I'd say you should contact the seller and see about a replacement. For some reason. I'm thinking the issue I read about was basically small metal particles because the titanium threads weren't very smooth, and their rubbing together when twisting the head, ultimately caused some build up of conductive "dust" to accumulate between the head tube and contact ring where the top of the battery tube makes contact. Not sure where yours is coming from. Can you see any part of the contact areas in the head missing plating?