Did you guys carve out the holes on the front of the cowl? The ones to the left and right of the spinner, and the crescent shaped one below? I also understand that you need 2 -3 times the area for heat to exit, in relation to the air coming in. I can go through the tank at all speeds with out any problems. You guys and the planes that glide when you flameout, and my brick that keeps running.... I am also running the hotter A3 plug, as my motor won't run horizontally without it. Using the standard plugs, it would die at half throttle, acting lean, and it does the same thing with the A3 plug, and the pitts muffler. I had to use the stock Evo muffler. The stripes help me tell the difference from top and bottom of the wing.