Ok I have been trying to tune my idle using the methods in this forum. I broke in my engine. Got it tuned pretty good. Runs good it idles. it will idle about 15 to 20 seconds befor dropping to a lower idle. But the idle seems very unstable. It never consistent I can make a lap come in may drop sooner or take longer. Some times it will idle back up some times it won't. I sealed up the engine. With rtv, carb back plate pinch bolts. The engine I am trying to tuneis a dynamite .21 platinum xp. I also have a Orion jtb addition that is acting similar to this one. My sons losi 350 was a snap got it diled in the first round. any ideas? 20% nitro also on all engines