I noticed something when riding today. He will not turn right. I tell him to turn (he neck reins) and apply pressure with my leg. Just the same as I do for a left turn. But he won't do it. He'll stop, back up, turn left, basically anything but turn right. Now that I noticed this issue I can think back and from the very day he came home I haven't been able to execute a right hand turn from the ground. I'll have to circle him around. But I lead him on the left, so it's hard to turn right but that doesn't explain his issue while riding.
How can I teach him to make a right hand turn? It seems he knows what I want, but just won't do it. I've thought perhaps he has bad vision on that side so he feels vulnerable. We had a vet check done, but I doubt that included any type of vision check. Anyone have thoughts?