Np, man. the EPA is most useful on airplanes. Most places you'll go (incl. Futaba) will advise to keep the EPA as near 100% as possible, mechanically center the servos, and use the mixing (CCPM) adjustments to set the range around center. I think it was Jason Krause's web site that took it even further, advising against taking the limits too low on the gyro, either; in that setting, the reduced resolution can make the tail servo work harder and shortens its life. I haven't tried that one out (burning up a servo by cutting the gyro limits down, that is), I just follow the advice since it's cheap .