So I had this engine failure shortly after takeoff. Well it wasn't a complete engine failure, but around the time I reached pattern altitude, the manifold pressure dropped to like 21". I believe that it was caused by the butterfly valve in the throttle body partially closing, which was caused by the cable connected to it moving, which was caused by a lever inside the cockpit being moved. I did this super duper move that I call a normal turn to downwind, and a second turn to base and a third turn to final and landed on the runway I had just taken off from. Sorry no video available.