Buster McLaury - Question #1

Q: I have a 4-year-old gelding that really is soft and supple in his face and neck. A lot of times you barely pick up a rein and he gives you his nose. But there are also times when he has an idea about going somewhere else, and he'll push through my rein. So if there are times when he is real soft, but other times where he pushes through it, how do I work through that?