You are the second team we have heard of experience the same problem this season. Calling LEGO and replacing the brick would be best, but we happen to watch a video by a robotics educator in Australia, Dr. Damien Kee, just today about how to fix this problem. Here is a link. https://www.youtube.com/watch?v=NNoutMLxmJ0&feature=autoshare -- To UNSUBSCRIBE or CHANGE your settings, please visit https://listserv.jmu.edu/archives/vadcfll-l.html and select "Join or leave the list". -- VADCFLL administrative announcements are sent via VADCFLL-ANNOUNCEMENTS-L. Visit https://listserv.jmu.edu/archives/vadcfll-ANNOUNCEMENTS-l.html to subscribe.