I recently ran a tank of fuel through the Evolution .46 engine on my Alpha 40. Afterward, the engine and the top portion of the fuse. area directly behind the engine were covered with the oil. I have a Dubro Ehaust extender/deflector attached to the muffler directed down and away from the wing and fuse. I wouldn't expect that the oil would have ended up on the engine and top fuse directly behind the engine. I noticed a few bubbles a few fins below the head while the engine was running but didn't think anything about it until I noticed the volume of oil aftward. I suspect some sort of leak but I don't know where its coming from. Any suggestions?