[YaKs are BeSt]

No, all you are really supposed to work with is the idle trim.

Since it is analog or whatever and it isnt one of those little digital trims like the elev or aileron or rudder.

You just set the carb linkage and atv's up in the trim menue for the throttle trim so that when it is pulled all the way back the engine stops and when it is all the way foreward you idle up for flyin.

That is the way you are supposed to do it.

Oh and you could have a throttle kill with a choke servo on a gas engine.

But throttle to throttle mix is not needed when you can use the idle trim, that is what its there for, not just setting the idle. You use sub trim and atv's for setting idle.