I just got my bike back from the shop. Was riding it and it just stopped running. After about 1 1/2 months they finally figured out it was the Ahlmans (sp) spedometer recalibrator that was bad. Disconnected it and everything seems to work just fine... except.. I now have a red light on my dash and an F1 light displayed on panel. They (the honda shop) tell me it is because I have a bad O2 sensor. They wanted $150 to fix it. I know there is a resistor that can be used to bypass it. How, what, where.. all the usual questions. I tried to look up this subject but couldn't find it even though I know it's been discussed before. Any help would be appreciated.