hi ed, I'm using the recommended rb plugs code 1055-trx which ive been told to stick with by the guys on the rb forum, i dont like them they seem a little fragile. used a few odonnell plugs but they die just as fast. my engines non modified and all components seem fine when I stripped it, although after break-in there is evidence of a very slight amount of play between the conrod bush and crank pin, I've ordered a new rod but rody said the tm323 motor has a slight amount of play there anyway so if thats from the horses mouth so to speak I shouldnt worry to much. I will change it non the less.

cheers