Carbon Fiber vs Nylon

[IFLYRC_VIC]

I have a 450 size quad. It came with nylon 10x4.5 props and I have it flying very well. I bought a set of carbon fiber props (10x4.5) and the quad does not fly well with them. It is hard to get it to lift off, I have to really give it a lot of throttle. Then it pops up and goes up like stink! I have to back off the throttle to stop going up, then it starts to drop very fast. This puts me in a push-pull situation with the throttle to get it to settle out. Once settled, it goes into a small wobble. Just don't know what the problem is. BTW - the props were mounted properly. I put the nylon props back on and smooth sailing. Any thoughts.

[PatrikE]

Vibrations!...
I have cf props that have adapter rings in wrong diameter.
Check that the rings have a press fit in the hole.
If they can fall out or move they don't center properly.