The mare has an automatic lead change, mostly they're flying, sometimes she will break into a trot then canter again, picking up the correct lead. The problem is that when does a flying change, I almost always lose my stirrups or at least some balance. She throws her head up a bit, and really jumps into the change.
I know it's very common with horses not accustomed to flying changes, but my question is how can I make them smoother?
For now, it's back to circles ;)