Nice natured quarter-horse. Have had her six weeks. Don't know *much* history, but she is good to ride, generally. I have switched her from Western to English (I'm a Brit). Just spent an hour trying to get her to canter on her left leg. Tried neck-reining, pulling on inside, offside leg behind, inside leg forward, smaller and caller circles until I thought she really MUST canter on the left leg. But, no, she still started on the right. I don't know how she does it. Feels very strange and almost unstable. Any ideas? Thank you.