Cieaning up Edelbrock Aluminum heads?

Hey Folks,

Getting ready to clean up the new Eddy heads I picked up. The areas pictured below appear to have a thin ridge that appears to not have been opened up completely. While I can see where they opened the areas up with a router but looks like there's a bit of material I could clean up. Anyone know if that's by design or should I go ahead and open/clean the areas up? Don't bother?

Thanks as always