Per an Email from DJI this morning: Dear DJI Customer, Please note that Phantom 2 propeller guards are not compatible with the Phantom 3. We strongly recommend that you do not use the Phantom 2 series Propeller Guards that you bought with your Phantom 3, or that you remove them now and do not continue using them. DJI will send you new Propeller Guards custom-built for the Phantom 3 as soon as they become available, completely free of charge. We appreciate your patience and apologize for any inconvenience. Thank you, DJI I wonder what the issue is?