but a little different this time. now i understand that a red hot header is the result of a lean condition. and i also know that it can happen when these bikes sit and idle. now, that said, the last couple times i have ridden my trusty steed, the header has started glowing red while moving. first gear, 10-15 miles an hour, 1/4ish throttle it starts REALLY glowing. now if I increase speed and shift up a gear and get some rpm's up, it cools down significantly. so the question...why is this doing this all of a sudden? still has stock jetting. and has had a bit of an idle problem this year but all is good once the bike is nice and warmed up as far as the idle. just the last couple rides it has been doing this.