Wow, I got to practice deadstick landings on 3 of my 4 flights on my LT-40 last Tuesday. I put a new OS 46 AX on my venerable trainer for further break-in before it goes on my Sig Somethin' Extra. I fiddled with it and got it so it would idle considerably better but really don't have my low throttle stick adjustment set up perfectly. The Thunder Tiger 46 Pro I originally had on the plane (with over 200 flights) was dead reliable at idle. But, I have a new engine, different fuel and the stock plug on the AX.