Hello, my blade cx2 started to spin left during throttle up. I can see that the top blade is not getting near enoungh spin. Long before takeoff is possible, the blade tips over. This has happend suddenly and did not result from a crash.

I was flying for about 2 minutes, landed and then the problem began. Does this now when its hot or cold.

I tried the pots but that did not help. Just seems like the top blade is not getting enough spin.

I did install the alum bottom head and the blade came with the alum top head. I put alum on bottom about a week ago and flew flawlessly for about 5 battery charges...then today the spin and low power issue came around.

Any hints?

Thanks