ORIGINAL: beau0090_99
In order to get a good amount of torque out of the servo, I would recomend moving the attachment point of the throttle linkage closer to the center of the servo arm from where it is right now, while keeping the mounting location at the same point on the engine. This will decrease your throw (shorter radius) and increase force on the throttle linkage. Keep doing this until you have just enough throw (a little more than you need preferably), then limit the throw finally with EPA. Make sure you set your link lengths with your EPA set at deafult (100% in futaba world). I wouldn't recommend using EXPO on the throttle. Not sure you can on most computer radios.
best of luck,
Curtis
When you say EPA are you talking about End Points? Futaba label for End Points on the digital radio menu is E.POINT and for Exponential it's EXP. When you say EPA I assume you have Spectrum or JR and it's End Points you're talking about, correct?