Its CC3, and that Z fighting is sometimes caused by the bevel effect, particularly around sharp corners. Its a tricky one to compensate for, but it usually behaves itself if you reduce the bevel so that its only just there. Some textures are better than others, but it would be a shame to change the texture since it works so well with the rest of the map.

You could try reducing the percentage of the bevel, Scott?

Other than that use the other bevel - whichever is the other bevel to the one you are currently using.