Thanks for the post.   Yeah, I did it three times in a row. I have video of some of it.   That is why I did a hands off test with no AP. So I could be absolutely certain the trim was OK. But as soon as AP was enabled, you can see it climb up until it hits the stops again. As soon as it hits the stops, it starts coming down but not quick enough to avoid another stall. Not unless you force the nose down. The sudden "give" was an interesting part. It is how I expect the yoke dis