no, I'm sure you didn't hurt anything.
now you must set the collective pitch, that is what its problem with power is most likely.
you can do a rough setting without a pitch gauge.
unplug both the motors.
turn on the transmitter and select idle-up flight mode, center the trims except for throttle trim which should be allthe way down. Center the left stick exactly. Then plug in the helicopter, it should go to zero pitch. Look at the end of the blade, imagine a straight line connecting the leading and trailing edges, this line is the pitch line, it should be parallel to the flybar (hold the flybar level by hand). This is zero pitch. Look at both blades. Adjust the pitch by first unplugging the helicopter then adjusting all three servo link rods equally, either longer or shorter as required, by full turns. Don't adjust while powered up, it's bad for the servos. Set it as close to zero pitch as you can here.
Then check the travel with full up and down motion of the left stick. The head should go from the top at low stick to the bottom at high stick, and should almost hit the physical stops.
Now switch back to normal mode. The blades should be just a hair negative at low stick and full positive at top stick.
Now track the flybar and the blades as I described in the posts above.
Then fly, and see if it works, We may need to adjust the pitch a bit after these steps, but start with this.