RE: 10x - Throttle Curve Expo?
I found this technique in a book by Harry Highley. Let your engine warm up to operating temp and record the max rpm. Bring the engine to idle and record the rpm. Now take the difference between the high (Z pointt) and low (A point) rpm and divide that number by 5. This gives you 5 equal spacings between high and low. Using your tachometer, set your points such that when the throttle stick is exactly half way the rpm noted on your tack is equal to the halfway point between A and Z (i.e. half stick = half the rpm). Do this same approach for the other points. When you finish, turn on the curve smoothing option noted on the throttle curve screen). This smooths the "curve" but in reality the curve is a straight line!! And, viola - a linear throttle curve!!
It may take some getting used to when flying but once you do you'll love it!! That last 1/4 or throttle stick movement will actually change the throttle setting!!!
Try it before you pooh-pooh the technique and you'll see what I mean!!
Good luck,
Bobby