Crash, you are so right. The first flight on my patty the throttle did stick open... wide open. I don't remember the exact reason why now, but it taught me a valuable lesson. A simple servo on the choke is cheap and easy to do, repairing or replacing a plane as beautiful as the patty isn't. Fortunately, my Patty flew nice easy circles until it ran out of fuel and landed safely. I won't have another gasser without a choke servo.