Bob - Where are you at with the CG ? I am using 3421SA's on the elevator half's, 9411SA's on aileron's, and a Hi-Tec big torque, (plane out in shop now), on the rudder, DS821 on throttle. Using an SR Nicad 2250 mah 6V, just for insurance for rx battery pack. Mounted right below Tettra tank, not dead on center but I can shift. My thinking a little nose down when balancing for maiden flight. Maynard, this YS does shake a little on idle, smoothing out increased RPM. I guess the Hyde mount will make it shake more.
I am still messing with it, have it down to around 2500 on idle right now, using 20% CP Pro-Pattern. Started with 30% heli, too much smoke.

Vince