Anyone using NGK 5165 ZFR5F plugs in their 750 (93 and older)? If you are, what had been the experience? THese are the plugs that NGK seams to be recommending, however I can't find them recommended on any of the usual parts locators. Curious. The 5165 is what NGK calls its 'projector' plug... which, among other things means the electrode has a 'v' notch in it. These are not a platinum plug. BTW I have had good luck with www.clubplugs.net out of Canada. Their prices are very competitive.