I am using my first YS 140 FZ on my pattern plane.I bought it used, it seems to have plenty of power.I am using a 16 x 10 prop and running power master pattern blend 25%.My problem is when I first start the engine I set the throttle trim so the engine idles good, but after I take off and fly a few minutes and come in for a landing the idle is quite fast making landing difficult.Any suggestions? Thanks