You nailed it. Makes complete sense. Would be nice if the auto-leveling report if bed leveling needs some adjustment. I suppose this could cause more alarm than anything else; but for those who like their machines running silently, this would be nice to learn up front.
I went through the manual/auto leveling a few times to actually get everything dialed in. I ended up using new and totally flat of sheet 1500 grit sand paper instead of the laminated calibration card to get consistent results. I found it easier to find just the right level where I felt a tug. The laminated card slipped around more readily than the sandpaper.
Everything seems to be running smoothly now.
Thanks again!