Thank you Helismith! Your simple procedure worked great, now I can see the change from rate to HH on the gyro.

The NEW issue is a terrible vibration in the rotorhead during spin-up. I've checked and re-checked the flybar balance and lengths from the flybar control arm to the paddle it's within .003" (each side), I balanced my (ready-to-go) 425mm blades and found the CG off about 1/8" and adjusted it. But the heli still tends to "dance-around" at 30% throttle so bad that I PANIC & hit throttle-hold, then palm the head button to stop the rotor! Blades are snug in the grips, but move easily if shaken.

I took the swashplate & rotorhead assembly off to check the runout of the main shaft, it's less than .0005" (I think that's pretty good for plastic bearing-retainer blocks). I also removed the flybar again, to check straightness on a surface plate, and it's fine.

Even though I measure the distance from the control arm to the flybar paddle, could the balance still be off? Is there a simple method to balance the flybar paddles on the rotorhead? Or could the vibration be caused be something else I'm missing?

Thanks Guys!

Rick