Keep in mind that at idle and at WOT the A/F gauge will not do much - It will pick a place and sit there.
Yours sounds fine. If youy drive it, and under part throttle cruising, and light loads, if it goes rich-lean-rich-lean-rich, bouncing back and forth...then it's doing it's job. But the ECU doesn't change the mixture at idle - It has set values.
And try to run a dedicated power and ground to get a good reading - Autometer says that grounding is especially important...
Later - Brian
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