Here are some cowl shots. I haven't had any problem with overheating. I used rubber canopy grommets from a Raptor helicopter to hold the cowl screws and stop the cowl cracking, also for the highspeed needle extension exit. The engine is at 45 degrees from inverted so that the muffler comes out the bottom and the Magnum 70 four stroke with an APC 14x6 is plenty to fly it.