I don't think you should be concerned about that, Dave...especially if it starts well and runs well. You might see if any of the vehicle inspection stations around you still have the tailpipe sniffer they used to use for air quality checks. Most of these were not much more than an air/fuel ratio reader connected to a computer. They'd be able to tell if you were running too lean or not. But honestly I doubt you are. Unleaded ethanol fuel by nature does better with a slightly richer mix, but usually about 10% richer will take care of it.

~ Jon
1952 1/2 ton with 1959 235 | T5 with 3.07 rear end