Hehe, you don't If you don't like the quality just don't scale it down but make it larger instead while adding more bricks.
If you scale it down you will lose details. If you're going to make it to be tileable though you can simply add some repeat in Maya.
I have a strange feeling you already know that though...
Benny
When in doubt, delete history and freeze transformations.
My latest snake game
(Requires DirectX9 SDK and Framework)