I've been working on maneuvering at the lope (me and my boy are rusty - especially me since I'm still learning) and I've been noticing that he doesn't (with me anyway) like to turn at the lope. We did large circles today and whenever we got to the turning part of the circle (close to the arena fence) he'd slow to a trot and act like he couldn't turn at the lope or maybe he was thinking the arena wasn't wide enough(?). It's a decent size arena but it isn't extremely wide I don't think, I don't know how big it is exactly. Anyway, I've been warming him up and making sure he does bend and everything, so I don't think it's a warm up issue, but I'm not 100% certain. I had someone ride him in the past (more experienced) and he did circles fine. But we don't have an instructor here and I can't afford a lesson from an outside person or in general. Any tips?