I own the CH Throttle Quadrant, CH Flight Sim Joke and the pedals. And i never have problems with the engines. I set one axis to mixture. So when i begin the engine start, I first push the mixture to full and then the prop levers go until start and feather. Then you can control the prop with the assigned axis. On shutdown you pull the prop levers all the way back and then the mixture. And there you go, my engines are going out