I just overchurned a batch of ice cream this week, not by a lot, but enough to notice... and now I think I understand what you are saying, Pie Lady. There's kind of a funky mouthfeel that I suppose someone could use the word "dry" to describe (I think of it more as "waxy"). So I'll agree with your original assessment, that you may have overchurned your ice cream. Maybe try intentionally UNDERchurning your next batch, let it finish freezing in your freezer, and see if the mouthfeel changes.
By the way, the batch I messed up? We are still eating it all because it is SO GOOD! I made a vanilla base, then did a small batch of what was essentially bananas Foster (three ripe sliced 'naners, maybe half a cube of butter, and maybe a quarter cup of brown sugar, all simmered until it's nice and gooey), then added a big glop (another quarter cup?) of peanut butter and stirred until it was mixed in. I dumped that in the vanilla base, used the stick blender on it, and poured it into a ziploc and floated it in a bowl of ice water. Then I spun it in the Cuisinart, and towards the end, I dribbled in a handful of chocolate chips melted with a spoonful of coconut oil (this makes the "magic shell" stuff you can drip on finished ice cream, or you can slowly add it to your spinning ice cream to make stracciatella, tiny chocolate flecks).
“Assuredly it is a great accomplishment to be a novelist, but it is no mediocre glory to be a cook.” -- Alexandre Dumas
"I give you Chicago. It is no London and Harvard. It is not Paris and buttermilk. It is American in every chitling and sparerib. It is alive from tail to snout." -- H.L. Mencken