I purchased a 6 year old TWH gelding several months ago. When I first acquired him, he was generally disrespectful and pushy. Althought, I have made great strides with him, he still has some very annoying behaviors that I have not been able to resolve. One of those behaviors is that he lays his ears back whenever I, or anyone else, approaches his stall. He used to bite, but he rarely attempts to bite me because he knows he will face quick and severe discipline. He will, however, attempt to bite others. He also seems to detest grooming. When grooming he won't stand still and seems to genuinely dislike being brushed. Any suggestions for how I can cure both of these annoying behaviors?