Hi!
I'm not going to be unpolite here ...but why on earth test props by bench running them ?? Bench running or static test ain't gonna tell nothing. It's what happens in the air that counts. The only thing you will get from this is how well a prop will turn a certain prop or how bad it will turn a certain prop. it doesn't tell you how well this prop will function in the air!
Being a pylon racer (and scale builder), !'m used to carving and modifing my props...but I test them in the air ...not using a calculator program or such and not bench running anything.
It's a well known fact by all competitors and experience fliers world wide that APC makes good props...better than most other propellers, but not perfect in any way (if there is such a prop ). But to have a better performing prop you can change it's shape. You can do this too all plastic and wood props. If you know what too do you can have them perform better than the standard variety. But you must try them in the air to really see if they work as predicted.