I have checked everything numerous times and his equipment is fine also his teeth have been floated recently. I appreciate your prompt response but, I feel like making him go so he doesn't rear is rewarding his bad behavior. Because that is what he wants. You have to understand the mentality of this horse. If I were to make him work when he doesn't stand still it could take hours and hours. This horse would make an excellent endurance horse. We took him on a trail ride last labor day. We went about 15 miles a day and he was still ready for more on the third day. He loves to go, Not run-away just go, go, go. I have talked about him on Dennis Reiss' forum and everyone says make him go but, that is what he wants.