There is no need to insult me evan-RCU. Looking at how long you have been a member at RCU leads me to believe you have probably made one or two more dumb mistakes than I have so far. That's how we learn.

I know JR horns don't fit Futaba for instance.

The servo arms I used was ones I got from my LHS after telling him what servo's I have. And the horns he gave me where not the ones that I got initially with the servo's.

According my LHS .... Futaba horns fits Hitec servo's, I trusted that to be true.

So yes, probably a dumb mistake that I made in hindsight, probably would never have become a problem if I was not doing anything else but hover around.

But, I have learned something new and still have a heli to fly ... An improved heli, now comes standard with uber strenth control Horns ... And they are screwed on with the right screws by the way