Set LSN to 2 turns out from the bottom,HSN 3 to 3 1/2 turns out from the bottom, set mid range needle flush with the body of the carb. Set idle so carb is open about 1mm. try that and see what happens...Maybe replace the glow plug to a #8 or #9. Check screw that holds carb to make sure it's tight. There could be an air leak somewhere. Does the motor get hot fast?