I am in the process of fitting my DA to my Edge at this very time and I can tell you ESPECIALLY if you are going to put it on its nose like hovering and torque rolling that you need to take a section of the trailing edge out for exit air. The general rule of thumb is 3 times the exit air as entrance air. If there is not enough exit air the engine is going to run hot. A little removal of the trailing edge in the center will alow for exit air and will not look bad either.

I take out as little as possible of my cowls always as I like a nice look as well.

Take it easy,

Norman Ross Jr.