The scoop needs to be at least somewhat smooth if I really want to see how it cools so I added 1 round of filler to the inside and out, sanded it down and got a pretty smooth contour out of it. Definitely ready for flight. I then added a few strips of weather seal to the cooler opening to created a nice "vibration free" and air tight seal around the cooler bracket. I then installed her and she ready to go! COME ON BABY COOL IT !!!