Now I don't mean to nit pick... but looking at that throttle servo linkage install it looks to me like that is asking for trouble? What happens if that screw comes loose and then you have metal on metal vibration along with no throttle?

Maybe I am too cautious but that doesn't look like the best solution? I am sure it has loctite on it.. just wondering if that's how you do all your planes?

**disclaimer: I am asking for knowledge.. not to knock your work