Tail Boom Wobble at throttle up/down

I have a Raptor 30 with a Futaba AVCS GY502 Gyro. When I throttle up and down I notice a pretty violent lateral wobble in the tail boom. At a hover I have a slight vertical vibration in the tail rotor or at the aft end of the tail boom. The Fly bar paddles are at an even pitch setting and the Main Rotor is in track; also the Blades are a match set (even weight, main and tail). Could this be my gyro setting? Some one helps me out with some guidenance??

Thanks

Gyro sensitivity could contribute. Have you checked the balance of the tail blades? How about the drive shaft for the tail blade? Is it true (not the tail boom drive shaft, although the guides in the boom can cause problems too)