Ok, all parts are installed, flybar paddles and blades adjusted to pitch, batteries charged all ready to go. Checked all functions to make sure good to go, except main motor, why check that, I know it works!! Plug battery in, wait for gyro to center, back up behind heli and hit the throttle to about 1/4 as normal...................nothing happens!! Well *@!&. Throttle down to see whats wrong and as soon as throttle hits "Idle off" heli jumps into the air about 15 to 20 feet before I can react and try to get it under control. Well needless to say, I wasnt quick enough, by the time I went to level her out, she turned on her left and nose dived into the pavement, no couldnt hit the softer grass, had to be pavement. It was one of those occasions where all you could do was stare for a second at what just happened. Made my way over to the heli, unplugged the battery and surveyed the damage. Bent tail boom, both blade grips broken, broken center hub, traing gear thrown in two different directions, left landing skid screws pulled out and lost the battery hold in rubber band (ha ha). Actually not too bad for how she landed. One thing for sure though, when it decided to take off, it took off!!!!! What happened I wonder??? Oh yea thats right, when trying to get FMS to work, I reversed the servos on the TX. That my friends was one of those lessons that you are taught and taught but sometimes the excitment of the moment makes you forget, ever happen to you, well it happened to me. So luckily I had all the spare parts handy, lets see what happens when the TX is setup right.