Iam a newbe to Heli flying.I purchased a Eagle 50 in December and have had nothing but problems, might be the newbe at work. I have had three main rotor motor failures. The first time I tryed to fly the main rotors hit the tail boom and killed the rotors and the motor. Next motor, I was spooling up ready to lift off and the motor quit. The third motor again the tail boom hit, rotors distroyed and the motor. How do you install heat sinks? From what material? How do you make sure that the settings are correct, the manual dose not go into how to check settings. Where may I find this information?

Thanks
David