The engine starts if I keep the trim open a bit more. Should I have to do this though? Is the Idle screw slightly out then? Also I notcie when I put the glow starter onto the glow plug and spin the electric starter to start the engine the throttle servo twitches. I think this may be closing the carb more so their is not enough air getting in. How do I stop the servo twitching when attempting to start the engine... any ideas?