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Message: <blockquote data-quote="Tazza" data-source="post: 5171" data-attributes="member: 82">To do the job correctly they will grind the surfaces flat then send to get hardened then give it a light grind to ensure it is still flat. Some metals will get a slight furry coating from the hardening process that is easily polished up for a good smooth finish.Just having the surfaces ground will work for a while depending on how deep the scoring is. You may be lucky enough to get away with it like that as you may not remove all the hardening as it does taper off after a few thou. If you run it and decide to get it hardened later they will need to re-grind it. Its your choice, you may get a good life with just a grind but again it may only last a few hours before it picks up and causes more damage than it had before ( i do doubt it would do that but it could).Any other input guys?</blockquote>