So, don't you just love the taste of fine, ground metal??? LOL. I don't care what kind of mask you wear, that taste stays for hours.
I think they look okay. It would be nice it you could smooth them out, though. Even the smallest grooves can act like the ridges in the sand do at the beach, and cause slight "waves" in the exhaust as it exits. I don't really see this as being a problem in your case, but this is as good a time to work on it as any. Try blending them with a finer bit at a slower speed.
Take care,
~Chris