RE: Linkages, Horns, EZ-connectors, Z-bends Etc.
I've used a simple 90 degree bend at the servo end and a wheel collar retainer (an L-bend)...never had one of those fail. I also used Loctite on the collar's setscrew. Like Z-bends though, it's only good if you have a straight shot with the pushrod - otherwise it'll bind on ya.