question for gregp- how is that irridium plug doing now? Seriously contemplated buying one-also have cold start issues. I don't care if it cost 11 bucks, but I've heard mixed reviews, a kymco tech told me it won't help cold starting. Thanks for providing the ngk part#, I may just get one. Starting to learn it's not JUST one, but several things one may have to do to start in <40 degree temps. The people 50 is a cold blooded beast....