The most recent horse I've been working with is a 10 year old, Quarter Horse gelding that's approximately 16.3. Almost every time he goes over a jump, he lands with the correct lead in his front legs and the incorrect lead in his hind legs. No matter what direction you're going, 99.9% of the time, he will not land in the correct lead in his hind legs.
Also, he does not perform flying lead changes. His owner has continually said, "I'll start teaching him how to do a flying lead change tomorrow." And then tomorrow becomes the next day, and then the day after that. She then decided to give me the task of training him. She expects him to do a flying lead change when asked by the end of the summer. Any suggestions?