Note: Its better to adjust proprtional first.

Adjusting the proportional
1. Tape your heli to a upside down fresbie or put it on a very smooth surface or table.
2. Center the proportinal knob.
3. Plug in the battery.
4. Slight throttle up, take note on direction your heli yaw/turns.
5. Unplug battery.
6. Counter adjust for its yaw/turn.

Adjusting gain.
1. Turn it all the way down.
2. Slightly adjust it till the tail stops shaking while in a hover.
3. Then back it up just a tad bit (1mm or less).
Note: This can be done with the battery in.

If you want more then check out this link.

Tips/Repair/Guides/Mods Links
http://www.rcuniverse.com/forum/m_68...tm.htm#6821632