Trying to figure out AFR reading

Don’t worry about reading the plug for idle, cruise, or transient throttle positions, you’ll just drive yourself crazy. Read the plug for WOT fuel and ignition. Get the gauge responding correctly (I have an AEM UEGO in my truck and it’s fantastic) and once it works you’ll learn to trust it. After the cruise and idle AFR are sorted out THEN work on WOT and read the plug, comparing it to the wide band. The emphasis should always be on the plug.