I bought a four year a few months ago that has been pretty much a pasture ornament. My one big issue that I really have no clue how to get him to respond to leg pressure. He will move forward and back fine, but the little stubborn cuss when I put pressure on one side to get him to move over he wont. I've used spurs and all he does is pin his ears and squeal (his way of showing displeasure). This is the first horse I'm training myself, and I've never had this issue, so some suggestions would be helpful.