Greg,
The gyro is on the nose wheel only. As soon as the plane rotates, its off, so just having it on the nose wheel solves the ground handling problems. The JL F-15 I had did a "dance" in yaw when it hit turbulence and so we put the gyro on the nose wheel and rudders, but honestly, this one doesn't seem to do that, at least that I can notice, so I kept the gyro on only the nose wheel. I also run the nose wheel and rudders on different channels so I can trim the steering, so its easiest to just put it on the nose wheel.
The plane is up-side down in the shop (again

, but this time, its not the fault of any defective FEJ part), so I can't get you weight or CG right now. I'll do that in a few days when the repairs are finished...
Bob