I can only tell ya it's a matter a time and your heli's will be grounded! HH knows there are issues and refuses to address them, cause they don't know a fix! Mine threw a tail blade from all the "normal" Shaking that it is supposed to do. Right. I never thought I would say this but my walkera 120 kicks this little helis arrsss! I own 1 walkera and 7 blade helis so don't "brand" me as a walkera guy.
They try to tell ya ta "make sure the tail is in all the way, make sure the TT rod is installed correctly. This is a piece a crap. I wanted to wait till bugs were worked out but caved. Lasted 2 min. and I took it back to the lhs. REFUND. Good luck! Rant over!