no, i took it off and looked but i didn't look inside the head but there isn't anything to be dropped you have to pull it out. you can feel it though if you put you hand on the cap. maybe it's the rotar? is there a screw that holds the rotar in place when it's slid on to the shaft? theres a hole there i thnk? i cant remember. but yeah maybe when i took it off and layed it down it moved?