Hi Guys i am also having a similar problem,

I can get the failsafe to work on Futaba FF9 super, but according to the instructions it says after the .2secs of failsafe the engine will go back to last throttle position, as i use the middle rotary knob this means it will go back to full bore,

So even though i get the failsafe to work it will go to full bore after X AMOUNT OF seconds,

Matt J