Hey, I had the 265 kit done by eric gorr last spring and through the past season the bike ran awsome, except when the bike would warm up to operating temperature it would ping when i opened it up either on big uphills or long straits but never part to 3/4 throttle. My plug always looked about tan in color, so i assume the jetting may be a little lean on top because i don't notice the pinging anywhere else. I have the stock needle in the top clip positon,a #155 main and a #43 slow jet. Should i raise the needle one position or bump up the main jet one size. If this means anything, i notice a brownish area on the middle of the crown on the piston and the rest of crown surface is blackish. Is this a sign of a too lean condition because i don't remember seeing that on any of the previous top end jobs prior to having the 265 kit done. If anyone has experienced any minor jetting problems with this big bore i could really use the help. I appriciate any help Thanks......................