[MTS247]

Mine does that same high idle thing and then drops really low and stalls. but it idles very high at start up, even if i taxi around a bit it wont come down. so as a result i lower the idle because i dont want a fast landing. but then on aproch im bliping the throttle to stop it stalling. It also has an ocasional misfire sort of thing when flying around but it hasnt caused it to stop, yet.
NKG plug, rcexl ignition,

I have checked the gaskets but i'll check again.