Rings when sculpting with brush 1

I am getting ring-like terraces when sculpting with brush 1 on low opacity. I'm creating a custom golf course terrain, for which much of the work is fine-tuning, but anything using low opacity, particularly opacity 1, leaves me with these terrace things that I have to smooth out. With a large brush it's more obvious but the terrace rings still there with a smaller brush too. It's less obvious on opacity 2 or 3 but still there slightly.

I have been told that this brush is supposed to give a mole hill look, rather than a mountainside terrace farming effect, and if that is true then the need to meticulously smooth out these bumps is making the sculpting process take me 2-3 times longer than it otherwise should. How would I fix this or is this normal? I'm using version 4.3.4f1 on Windows 7 Pro.

[IMG]http://i.imgur.com/85vzmLg.jpg[/IMG]