@ocelot60- I think if you make your own sunflower butter at home, you shouldn't expect it to be very creamy. I have tried making other types of butters, and they always turn out with a grainy texture.
I think you should try to find commercially made sunflower butter if you really want to experience the kind with good flavor and creamy texture. If you can't find it locally, you should try shopping at the closest natural food store. You can also shop for it online, because a lot of online food shops carry unique food items such as this.