I start my 074 with a .40 starter with no problems. Try squirting some fuel into the carb and see if that will get it going. It works for me. Once it turns over it should produce enough vacuum to cause the fuel to be sucked into the Carb. It sounds like you need a squirt or two of fuel into your Carb. Also be sure youre getting at least 1.5 volts to the glow plug or make sure you dont have a cold plug. Ive never had a problem starting these engines with the standard size starters. Hope youre at least using a 15% nitro fuel with Castor blend. Just got finished about a half hour of flying.