Hi All

The simplest way to do it is to unplug the motors, turn on the transmiter then plug in the heli battery. Check that your trim tabs are centered on your TX. this should give you the center position on the servos. Then unplug the battery again before you work on it. If the swashplate is not level then unscrew the servo arm and replace it so that the swashplate is level. You might find that it is not exact because the spacing teeth on the servo arm and shaft don't mesh at exactly the right position for a level Swash so just get it as close as possible and then use the trim to do the rest.

Any vibrations means something is not balanced properly, find it and fix it cause the Aerohawk will fly much better.

I hope this helps

[8D]