Way to go Larry! Thats a keen idea on the pushrod treatment. I'm guessing one could use heat shrink tubing on top of that too, once it is adjusted, just to be safe?
Nah, then it wouldn't be adjustable anymore!
Seriously, for a rank beginner I think it needs to stay adustable. As for securing it later and for a more seasoned pilot, I would suggest thin CA before I would heat shrink tubing. Besides, its less letters to type!
Larry, I don't know who thought this idea up to its present form but it is, in my opinion, brilliant. You may want to copyright this one. Years ago I saw some of the micro R/C modelers use these with heat shrink and CF rods and they used CA to set it once adjusted.
By the way, I think I can name that connecting piece. If it is what I think it is, it is very inexpensive and not hard to find at all.
Robert