Yepppppppers . I should have told you to To check for leaks

1. when you crank the prop counter clock wise with fingeer on exhaust ,does the fuel flow from the tank to the carb?
2. If you have two needle knobs close the lower one all the way and then open the upper knob 1 and 1/2 turns .
3. This engine is similiar to mine because there isn't a nose bleed on it , so when you have it started at idling
I suggest you let it warm up for about 2 minutes or so before trying to run it at high speeds.
4. Another thing I suggest is leaving the glow plug on when you open carb all the way , if it still stalls then
you have to close the needle approximately 1/4 of a turn and try again.
5. I got mine to work because I have a os .40 which worked to specs in instructions , also having the OS .40LA
I was able to hear the difference in good RPM and bad RPM. Just luck, like I said that I was able to fly
yesterday. My .46FX actually runs like a 4 stroke for some reason , it only fires every 4 cranks.
6. Look at the top of the glow plug mine was lose , after I tightened it i saw a great difference in power.
7. what percent fuel are you using 5%-25%?
8. STOP RUSHING tommorows another day.