I have a brand new set of Mavic CXP22's laced to formula hubs. I loosely screwed a track cog onto the hub once just to see how it worked (I'm new to this), and then loosely unscrewed it immediately after (no grease). No other cog has ever touched the hub. Then about a week later I was looking at the hub and what seemed to be a little piece of the threading where the cog goes peeled off. It was about 1" long and seemed to be the piece at the end of the threading (closed to the center of the hub). This freaked me out a little bit. Should I worry about it?