What am I doing wrong here.. can't figure it out.

[DocSigma]

With complex CEM and TE enabled I've been trying to get these planes to turnover without success.

1: Magnetos are on
2: Fuel clocks are on
3: Radiator and/or carb heat open

At all prop. pitches and mixture settings after i attempt to turn over the engine with I press the prop spins up and the plane stalls showrtly after. I'm not sure what the secret is to get these started and stay started. Any tips would be great. I've followed a few online vids doing the same thing and my planes just don't start.