I'll 4th the .035 and forget it, it is just not that important. It will run a chainsaw, it will run a 800hp alcohol motor. Verify your spark then go fix the problem. Only run with the choke on, so you have spark. Also means you have not enough fuel to match your air. So, blow through the carb with good cleaner, clean the gas tank, hope that fixes it before you have to disassemble the carb and clean out the fuel pick-ups. Can I bet the safe line on old ethanol containing gas?