Thanks WarpD... I can see how things could get bad with high, unopposed, RPM. But, I noticed this mostly during taxi to runway. At first, I thought it was a throttle issue that I could not regulate my taxi speed without basically cutting the throttle completely, letting the airplane slow a bit, the barely apply throttle until it neared 20 knots and cut it again. Then, I figured, if I can reduce the prop pitch, then the throttle would have less immediate effect and perhaps I could taxi at a respectable 10 knots instead of 20. But, no matter where I have the prop pitch lever, the airplane is soon taxiing at 20 knots with barely any throttle at all.