I recently flew my Dragonfly #4 helicopter, but the Rotor Head Core snapped from the flybar area to the main rotor head. I've been trying to remove the Rotor Head core (Part # HM-004-Z-14), but have been unsuccessful. I have removed the Flybar, but I am not sure on how to remove the Rotor Head code. Is it connected to the Guiding Ring by a small metal pin? It looks like it is, I'm not sure how to remove the metal pin. I was hoping it would be easy. can you give me instructions or point me to someone that can help. Do you know where to get these parts? thanks!