Make sure your scaling issue isnt something simpler than editing the depths of a text file. If you wanted the texture to appear the same on two different parts of geometry you would need to map those two parts exactly the same way. Which brings to mind the question, could you just use the same object twice and scale one of them down to make the smaller one? If you scaled the image up on the map for the second bit it would look blurrier due to distortion. This could also occur if you were simply rendering a small texture map onto a much larger area on screen.