Thanks Aug, I did neglect to mention just one last thing that has always worked for me in testing my own work or someone else's and it is the litmus test of how to check pushrods.
What I do is to make sure the radio system is off then with the control surface in neutral position, grasp the surface in the area near control horn with one hand and with the other hand holding the servos output arm and attempt to move the surface so the pushrod is trying to move the servos arm that you are holding in position. This will immediately show any wet noodle flexing and exactly where it is occurring from the control horn all the way to the servo.
The last test is to grasp the control surface near the horn and it fails if I cannot move the surface carefully from stop to stop in both directions without holding the servo and the switch off. If you can do this Ya'll got a fine pushrod system.
John