The only time I am worried about where my idle mixture is, is when I am going into the EPA station. Otherwise, I go rich and dial back a bit. Of course me timing is at 34 degrees total..

Others will disagree, but a CO tester alone will not get you the perfect idle mixture. If you don't believe me, get a 4-gas or better gas analyzer and then fiddle with your engine. You will see that if you set the CO perfectly, then slightly move your timing or air by-pass screw, a lot of things change.

And the CIS temperature and atmospheric pressure compensation is not that great. You see the system changes when the weather changes ..spring and fall...most people will notice it, most won't, more common with the 78-79 CIS as they don't have the lambda system...

Some have to tweak the mixture when the climate changes...

unfixed, could be my imagination, but since I leaned it out the power feels better during all conditions. BTW, I wish I had your mechanic--it costs me more than $40 just to hand them the keys. Plus, as long as I'm not harming anything, I'd rather wait until I have the right equipment and learn to do it myself. I'm done paying for anything I can do myself on the Pcar, unless it can't wait or I don't have the right equipment to do it right.

For now, as long as nothing is going to explode and I don't experience any driveability problems, I'm just going to forget about the tweeking and drive the thing.

I had some delays with my brakes that starting the driving season late for me so I'm looking to log some mileage and enjoy.

good plan bill. have fun.