That's pretty normal. I wouldn't tell Couples that he needs to get his right elbow closer to his rib cage at the top of the swing or tell Hogan that he needs to get his right elbow further away from the rib cage. Experimenting for a little bit doesn't really hurt, but you do have to trust that your natural motion may be the best way for you and that trying somebody else's motion because it looks prettier or whatever could be a disaster.