I have been working with D for over a year now on lead changes. I've done the pole work, jump work, cross cantering, He knows which lead to pick up when he never makes a mistake. So yesterday while riding I ask for a change and he ignores me. My friend said to try wiggleing my crop and maybe that will make him change and I try and.... YES HE CHANGED like he has been doing it his whole life! I almost cried!