Hey, I had to install a new inner shaft because the top of my original one broke. However, once I tried to start it up to test it out, the blades don't spin. When I press the right stick to the right or left, it adjusts the blades as if it's steering. However, when I use the left stick, nothing happens at all. Any ideas?

(cx2 ?) turn off your tx then turn it back on with the battery on the heli connected. let it arm. the blades should then spin.

It's a CX2. I've tried doing that, but it didn't work. Other ideas?

Is the light on the 4-in-1 solid green?

On the end of the inner shaft there are two flat spots,Make sure that the flat spots are lining up with the screws on the bottom collar.