I think he's pretty darn nice! If he's over at the knee, it ain't much. His front right knee almost looks a tiny bit swollen, or perhaps it's just the photo. His back is long, but he has the long legs to go with it. I really like his hip angle and size and that his hocks are low and front canons short. In fact, other than that his neck is a bit short in comparison with the rest of him, I think he has excellent conformation. However, my knowledge base is not as wide as Elana's.
His neck will muscle out nicely in time. I think he's super handsome , and under oakbark colored tack he'd be stunning.