I have replaced the rotor blades on my Venom night ranger and have been told that it is a Walkera 60 can anyone tell me if this is true or not.
The problem I have is that it will not lift off since I have replaced the rotor blades is this due to poor tracking or is it to do with pitch and if so what sort of pitch angel should I be looking at.

Any help or tips please.

Regards
Wac110