First off thanks, I got a set from HeliHobby I think they are extreme core ???? I have both aluminum heads but had to remove the lower because the mod makes me use plastic. I balanced the upper head and shaft assy . And have checked that may times now. Tracking is well within flite standards. I even put my crash kit back on with no luck.

It is F*($EN crazzy out of control, maybe I will go back just to be sure nothing is wrong.
This thing is just starting lift off them it crashes to any side it might decide.