Unresponsive flying

[Zandion]

I use a Logitech Extreme 3D pro controller as an input device for crazfyflie and is detected in the configurations menu.
However I try, when the thrust threshold reaches 56-57%, the crazyflie hovers and tends to lean to one side even when no inputs have been made at all.
It will not respond as intended and when adjusting the power supplied to thrust, it does not increase linearly but spikes immediately to 50% after the thrust input control reaches a certain point.

I have done some reading up beforehand, the battery is centered as much as possible and there is nothing else attached onto the nano quad-copter.
One of the rotors seem to have a lower RPM so I'm safe to assume that's the one causing me problems? I'm not sure if the propellers are mounted correctly as well.

[tobias]

I would start checking if there is hair stuck on the motor or if the prop is to close to the motor. During the start up the motors spin, try to see if the motor doesn't spin as long as the others.

It could also be that the controller doesn't center well. Check the target values in the flight tab. There you can also configure min trust etc in advanced mode. If the CF2 takes off and doesn't directly spin out of control they are most likely mounted correctly. Check that they are balanced if you haven't already done that.

[Zandion]

I have checked, nothing is stuck, the motors has adequate spacing from the propellers, the motors spin together, the propellers are soldered in their configuration, M1-Clockwise, M2-Anti_Clockwise, etc.

I have also tried out advanced filght mode but it doesn't seem to have any difference on it too.

I thought it might be a hardware issue so I got and assembled another CrazyFlie while balancing the propellers. This time it' doesn't fly but hovers enough to "float" around and exhibits the same erratic behavior as the previous CrazyFlie I have, which is leaning towards one side whilst ignoring input from the controller. Judging from the values indicate which 0 while idle, I would assume it was centered properly however, the values doesn't change at all even when I move it.

Is there another possible reason for this behavior?

Edit:
I've noticed that sometimes my motors doesn't spin as fast to generate a breeze below the propellers, is it my soldering problem or is the motor damaged?

[chad]

You say you experience problems with two different Crazyflies? Have you considered the controller might be the issue here? Do you have access to a PS3 or Xbox controller to compare...?

[Zandion]

Yes, I have tried and tested with a PS3 DualShock controller via MotionJoy as well, the behavior is exactly the same as the Logitech joystick controller.
Supplying just enough thrust causes it to also lean towards a certain direction even when no roll, pitch or yaw values are indicated on the PC client.
The difference is that the values do in fact, change when at rest and the analog sticks are moved.

Correct me if I'm wrong but does bad soldering of the motor wires affect the motors? I'm at a loss as to what could be causing the problem.
I can provide a video or other forms of media if required.

[tobias]

I've been away for a while. How is this issue going. Have you managed to solve it?