Unplugged O2 sensor and took a test drive and let it get warmed up. Gentle gas pedal stumble was gone but the bouncing idle still remained. So I guess I have multiple issues. I will go through the other suggestions when I have time to try to figure out what else is going on but I'm assuming that I will have to replace the O2. That was all I had time to check tonight. Thanks again for all of the info. I will post further results when I have them in order to benefit others.
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