And so ends the great tailwag mistery.

When you talk to JR they say their servo will not work with that gyro. When you talk to Futaba they say that servo will not work with that gyro. If both companys know that the two won't work together, you would think it might be in the instructions.

Never the less, installed the futaba servo & problem solved, flew this weekend & it flies great.

Thanks to everybody who gave input.