Sunday, I got my first lesson in what not to do with this rig. I tend to press up the fuel when I plan to do some mileage and expect and don't mind a brief bit of stuttering as a result. This thing, when I really over do it, continues to have fits for miles and sets the Check Engine Light. Thanks to the expert advice here on TM, I'm sure that was the problem, not a bad O2 sensor or wiring which is what I'd feared. You guys are a solid gold resource, thanks!