I marked the first one similar to the Buzz Pro wheel but didn't do the rest. Knowing the ohm of atty/carto before attaching and setting the wheel in a ball park range to match seems to work for most peeps. Then adjust it up or down accordingly. It did take me a while to remember which way was higher or lower so I think the marks can be helpful. I think I marked at 4.0/4.5/5.0. Buzz Pro and Infinity Pro (same chip used in VVG) uses three different colors. I used one color as that's all I needed once I had firmly embedded in my mind that all way to left is lowest and all way to right is highest.
Fiesty Alice.
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Me, too! I finally figured it out: LEFT IS LOWER. Once I got that, the rest fell into place.

