hey all! So I recently got a 10 yo quarter horse from a lady at the track I work at. He was raced as a QH and then abandoned once they made all their money. She found him in a field, very underweight and in just bad condition. She restored his health, got his teeth fixed and I think he looks pretty darn great for what he probably looked like. However, I've noticed his back is a little sway-ish. Opinions? Thanks!