I have used the easy connectors as well with zero problems , in my opinion there called easy connectros because they allow easy set up , then from that point you need to make them secure .
So I do the following , set my servo end with easy connectors , my control surface end with normal heavy duty clevases that have some type of lock .
Once set I only make my adjustments at the flight surface end manually and at the radio .
My easy connector will have the push rod grinded flat at the set screw position , then locked as tight as possible then I use J-B weld on the entire connection.
WHen you reuse the servos in other planes , simply change the wheel out .
Now some one will read this and skip the part where I stated how I make my adjustments and say why are you jb welding them ???? its simple it works and its easy , remember I like them for the set up stage , then I lock them in , they have never failed ever in 5 years of warbird flying and my set up is very easy