dvk,

thank you for the links. I wonder if there is a way to retro fit this mercedes gasser I have so it will run on ethanol mix fuel.

I addressed the higher idle by turning back the mix setting. It seems to work. Car is idling back at 700-750rpm today.
What would this be telling us? i assume that the injectors and the throttle are all dirty. It would seem that this car is just really high with HCs. I think that running the chevron techron 91 fuel in the tank while at the pre-check test definitely contributed to higher HC readings.
Also, having the intake set too lean may have something to do with the strange high idle.

One other thing, since the high idle the last two days, the ignition key lock has been sticking. I have been turning it in Neutral to get the key to out of lock. What could this be telling? I'm sure it's all related.

Thanks,
JAson