HELLO GUY'S.....HAPPY NEW YEAR!!!! Im here to get help with a HK401B gyro....whats happening is a pretty serious tail wag. Im working on a few projests and I wave switched to a different 401B because I thought the other was faulty. I have agjusted the gain to almost off ...then off .....still getting the wag....Then i turned it all the way down.,,,,,

450 clone
HK 30A UBEC
Turnigy H2218 3200KV brushless
HXT900 SERVOS (4)
HK401B GYRO
3s 1800mah li po
Any help will be appreciated. What am I missing here.....could it be head speed....so maybe throttle curve???.....My head is just spinning here.....I know its something simple....I hope someone can point me in the right direction.....
Thanks in advance guy's