"Rocking" Hover

[Hoverhoward]

Hi,
Blade BO 105 CB cx Micro Heli
Due to a mishap!! I had to change the inner rotor shaft ,the one that carries the fly bar. I was careful to make sure that the end float is non existent and that the motor pinion meshes correctly before finally tightening the grub screws .
The repair was a success except that in hover mode and in slow forward flight it rocks gently forwards and backwards which didn't occur before. Any ideas please.
Thanks
Howard

[dieselcarb]

check for play in bearings and shaft also might be worth checking ya misshap didnt damage a blade