Servo Horn breakage

[RC John]

I had my servo horn go on me after less than two races. It happened after what I thought was a rather minor crash. After the crash the front tires were no longer pointing straight, but off to one side. What happened was the servo horn's splines had stripped and allowed it to center on a new spot. I was lucky enough to have an extra servo horn to get me through the day.
My question is, is this a known weakness and has this happened to a lot of people? If so, how is everyone fixing this problem?
When my servo horn broke, my servo saver was already set on the loose side. After seeing how weak the horn is, I've reset the servo saver even looser, hoping to reduce stress on it from impacts. I've also added a little thread lock on the servo horn's splines, hoping that will help bond it to the servo and make it a bit more durable.