With your LTFTs, are you looking at live data, or averages? Live data is nice, but not what you really want to watch. It moves around to much. At idle your going to be a bit lean, why waste the gas when it'* not needed. Put it in gear and it will richen up. As long as your between +5 and -5 your fine. If you need screen captures for scans, just let me know.