What could cause the same bevel object to be different sizes when applied to different curve paths? I’m trying to model a street turn-around and have created the curb as a closed curve and applied it to paths that define the inner and outer curb locations. As you can see in the screen shot below, the outer curb comes out the same size as the original bevel object. But when I create a Bezier curve circle for the center island and apply the same curb bevel object it shows up way too big.

I’ve normalized the scale and transformations of the center curb path, thinking it might have something to do with it, but no luck. I even created a brand new Bezier curve circle, applied no scaling at all to it, and applied the bevel object with the same oversized result.
I’ve uploaded the Blend file here: http://www.skwerm.com/blender/bevelsize.zip
Any ideas?