Pain - the Unacknowledged Frequent Contributor to Unwanted Equine Behaviors
Horses don't "just" pin their ears when you saddle, get tight or twitch their skin when you touch them, and move away every time you go to mount. If the horse is showing concern, tension, or defensive, please, BEFORE you focus on the "training" first start with your horse's behavior, and assess it for potential pain or discomfort.