Yes, the engine was running at a 45 degree angle beween inverted and on its side. I had an issue with my .61FX that was ran inverted in my UCD 3d .46. The problem was solved when I ran a hotter plug in it. I just had to crank the head way up on the glow igniter to get her fired up. I thought this may have been the problem with the evo, but I ran a hotter plug in it with no luck. I also tilted the plane on a stand so it would run upright and it would still run bad. Its almost as if its either getting a huge air bubble when im at high rpm range but it loads up at idle...