i wouldnt worry about polishing them up crazy, clean them up and smooth them out. but remember, unless you're burning alcohol, you will have carbon deposit all over those nicely polished runners, so why bother working them forever. Leave them a little rough and the carbon will fill it and smooth it out.

 

I took those today not in 2006
hope they are looking better???

 

I can see a pretty big improvement there. Looking like they might actually help ya out now.