OK, so I have a lovely 20yr old Thoroughbred that I have owned for 12 yrs. I'll admit that he injured himself about 1.5 yrs after I bought him and was off until he was 17 chilling in a pasture (multiple reasons for that). We did no lead change work with him before he went to pasture as I was not capable of training him to do it and then I had a similar horse that I trained fairly easily to do changes. Now that my current horse has been back in work for just over 2 yrs (perfectly sound and willing to work) we have been working with him to do changes. He can do them and has but it's really hit or miss. I am not concerned about it because he does just fine in the jumpers figuring out what to do with his legs on the tight turns. I'm curious for a personal education standpoint if anyone has had a particularily difficult horse to teach that has some training ideas. He'll change over a pole and a jump and can canter trot canter and canter walk canter just fine. He just doesn't want to change behind.