I do feel the Firesian struggles a little early in training with the hind quarter yield, backing up and in regards to long and low I don’t really have a problem with it. I think they get your lateral head and neck flexions working correctly and incorporate this into your lateral movements this goes a long way to having a nice head and neck set. Backing up in correct flexion also helps as it puts the horse onto the hind quarters and elevates the withers which intern helps the horse find a balanced posture. I also notice that once a horse starts to relax when riding out on longer quiet rides that the head comes down and the hind legs start swinging through.