OK cool I didn't know that I had to press the % button after selecting the FREQ duty option.

So I went to do that a few minutes ago and...

Selecting the FREQ % duty and then pressing the % button, the outcome was minimum of around 59 and maximum of around 81 for an average of 70 % too lean. I will try to get it closer to 50%

How is gas mileage with mixture at 70% ???? What do you think ??? thanks !!