Hi Guys
How do you measure the correct throws on a control surface.Should I line up a ruler on the top/bottom of the surface and check deflection from there or should it be from the center of surface?I've been flying electrics a couple of years but this is my first glow plane and the surface is already so thick my guess is measure it from the top/bottom not the middle.I'm setting the hi/lo rates on a sig 4*60.

thanks for the help
steve