yep -just plain ol cut n try works best .
on static tests-you can get lead down the primrose path if all you look at is static thrust - or rpm
More rpm means --less load
More thrust means -more static thrust.
In flight the whole picture can change drastically .
Bottom line -you have to use props which allow best engine output and by simply changing mufflers (sorry bout that ) you can make a huge change in results
If the same prop turns faster -- you have increased torque and that is all good stuff. That will show up on the static test as more thrust.
Change the prop - you change the test - apples and oranges