RE: Kamdax Mirage 2000 Fan Install
You can cut the front of the hatch straight down, too, on the panel line AFT of the one the directions show, the directions show the one with the "jog" at the bottom that gives you locating tabs for the hatch, but a straight cut at the panel line behind it is preferable. This gives you a much, much stronger airframe.
Place the magnets very carefully...one pair on each side is enough...IF there is no gap or misalignment...at least using the Radio Shack rare earth magnets.
As you can see, I am whipping up another Mirage, I beleive it's my fourth or fifth...fun airplane. Ditch the landing gear and hand launch it. Cut out the areas of foam below the engine mounts, and you get a terriffic pair of finger holes and some extra air for the fan, too.