The next thing I would suggest, if the bike is still running a stock calibration, is getting it tuned to reduce the high peak combustion temps. That extreme heat is what exacerbated many of the issues with the early engines.
I agree Jerry, up to a point.
Adding XIED devices is the simple inexpensive fix to get the AFRs in line.
www.nightrider.comIt is my thought that the cam, port, and exhaust system are being leveraged to act as an afterburner and lower emissions, as part of the measured total PPM of CO, NOx, HC. So the chamber burn may not be that hot but the heat is a secondary burn situation. Just a passing thought and I could be challenged easily if someone knows more on the topic.