I think you said it best right there... Everything can fail but in Hitec's case they are not looking into it enough to see why these are failing. Instead they say, we've sold thousands of these servos and the numbers of failures are so small were not gonna mess with it.

Sorry, but if I can't find a reason why this servo failed me then I will no longer use them. Now if we were able to find the real cause whether it be servo related or not I would consider using Hitec again but not until then...