Well No expert but thats the beauty to the computer radio. The servo is not at the endpoint just the computer radio. You can close the carb completely with the endpoint but instead you back it off so it idles. That way the th-cut moves the servo that much more to shut the engine off and you can set that amount of movement as well. I tested mine so the th-cut would just close the carb, that way if you hit the th-cut switch while flying at say half throttle the th-cut movement isn't enough to stop the engine. Basically the th-cut amount of movement does not change whether your at half throttle or idle, just at idle the small amount of movement is enough to stop the engine while at half throttle it only slows it a little. I hope I'm not confusing you more. I know what I'm trying to say but not sure how to express it. I knew nothing 2 months ago and just worked on reading through the manual, at first it was very overwhelming but as you learn the simple things the more complex become easier. I kind of laugh at myself now for how I felt that I would never learn all this stuff. At first the manual can feel very complicated but take it one step at a time and it gets much easier. My first RC radio ever was a 7C so I had everything to learn all at once.