RE: engine mystery
Minny
I have the instructions for these engines. They are quite thurough. If you would like I can scan them and email them to you. The instructions come with 2 head shims taped to them which guess you don't have. Unfortunate. The instructions do have a glaring error. They say you need a bladder tank or a pressure back plate to pressurize the tank for max performance. Pressure has nothing to do with max performance but enlargening the ventury until the engine won't run unless the tank is pressurized does have something to do with max performance. Or they could be telling you that the needle valve is so cruddy that they need pressure to get a consistant needle setting ala some old cox TDs. Flaming out when removing the glow is an indication of too rich a needle. I have never run these engines so unfortunately I can't give any first hand advice.
Denis