There are 2 things I need to say about this.
First, Using the texture alignment tool might be alot easier that shifting a brush size to make the texture fit then moving the brush.
I've seen that done, but it's a silly way of texturing. Theres a tool for shifting textures on stationary brushes- use it.
Second, there are tutorials on texturing that I STRONGLY recomend reading hosted on this site. After hearing how you're aligning your textures, I think you need to do some reading and "relearn" what you percieve as the basics for texturing.