Bob, how do you explain JR providing the heavy duty plastic with the 8711? IMO that's a broad statement from the manufacturer saying it's up to the task. I'm head scratching on this because a friend of mine had the heavy duty plastic do the same thing (spline problem) on a Euro last week. In his case, the airplane was landed safely.

In my case, I've been using them exclusive for years and thousand flights, no issue ever.