Just out of curiousity;

Are you checking the a/t fluid with the engine idling...

And the gear selector in park..?

I have seen the condition you describe especially just after adding fluid to the tranny...

I call it "dip stick smear"... [the filler tube gets fluid residue smeared/splashed all the way up in it theory...]

Generaly all that is needed is for the residue to drip and drift back to the pan, to get more accurate readings...

Only trying to help, thanks.