Do you have a trainer? Alot of what you say are Chance's problems seem like they would be dealt with swiftly and without issue by someone that is a well-seasoned horse trainer, as they would expect to see those things in re-training a horse, and it unwarrants too much mention from them, because it is settled before the issue has a chance to snowball further. Alot of the behaviour I have encountered while training my horse troubles and frustrates me initially, and then my trainer comes out and 98% of the time I'm doing something incorrectly or she handles my horse and straightens it out and we move on. I too rode horses for 9 years, but owning my first untrained horse was like greek to me - until I found a very valuable translator, my trainer. In fact, riding was such a technical thing for me, I rarely thought about the mental processes of a horse, I was self-engulfed, even when riding greenies. To be on the ground or training undersaddle, that truly makes you accountable for your actions and how they effect the life and learning path of a horse when its in such an impressionable phase, rather then riding a horse that knows the MO and can deal with your imperfections in seat and cue coordination. Sometimes, we just can't do that on our own. I'm not saying sell the horse and move on to a 15 year old 4H pony. I guess I'm saying that you need someone that is going to force you out of this caretaker-child relationship and push you towards a healthier teacher-pupil relationship, so that you don't have to ride a ticking timebomb for the rest of the years you own him. We owe it to our horses to admit we can do better, especially if we are basically backyard trainers. We have to keep our head over water because without the help we'll just, well you know, ride on with the analogy, haha.