Del:

Really doesn't relate to your problem directly, but here's another tip that almost cost me an airplane to learn...

If you use Sullivan or DuBro flexible plastic pushrods, they need to be anchored in several places along their length, not just at the servo and at the exit from the fuselage. My elevator linkage is set up with the horn on the bottom so pushing the rod = up elevator. If you fly at normal speeds, the pushrod has no trouble with the control surface.

If you are flying very fast, the aerodynamic forces increase. Pulling out of a fast diving loop, instead if pushing the elevator full up, my pushrod buckled... and I got about half the normal throw. I never puckered that badly in flying EVER and I swear there was grass in the axels when I got back. The moral is that I KNEW exactly how tight a circle that plane could pull, until the pushrod buckled. Once that happened all bets were off and only inches separated my airplane from the ground.

Make sure you have the middle of that flex rod or Nyrod supported in the fuselage!

N