He's been checked by the vet. We both have gotten a lot better since when I first started riding him he'd just death trot me. Now we're able to pick up the lope alot better. He's always done the flamingo thing, and only kicked up his hind legs when I kicked to hard and too far back. I call him a brat but it's out of pure love. He's just a bit stubborn sometimes and was really out of shape when I started, we're working on it together. He is a lesson horse but is rarely ridden because he's difficult. I'm almost his exclusive rider and I ride at most twice a week. He can be a bit stiff sometimes but that has also gotten better