Some folks with 2013 RT's and ST's are having high heat and melting of parts, and some are not.... I know when I pulled my rear spark plug ( it is easy to get to) it was CHALKY WHITE. ....and we are having heat issues. Would be interesting to see the color of the plugs on bikes that are not having heat issues. I remember Scotty telling me he had an ECM change and went from lean to fouling plugs due to too rich. Is there that much difference between the A/F mixes bike to bike? Post a picture in this thread of your rear plug, and say if you are having heat problems or not.... might give a little insight.
