Flyboy Dave:Now why do you suppose Super-Tiger did that ? After all these years of trying to keep ahead of their carbs. they did this! I was told of this trick by the fliers in Minneapolis. They swore by it. Sure don`t look like enough difference in two webs to help. Sometimes I think they are pulling my leg,not sure of people that eat that Norwegian fish.I still check my props ,mark heavy blade and put it 180 degrees from piston at top dead center. Works for me! big max 1935