I don't think I've affected the metal of the blades. The picture you see above is how they look now (ie after cleaning). I asked a local knife maker what to use and he said rouge in that it will not change the metal only the tarnish. All he warned me about was being careful not to contact the brass. The Dremel tool had just a cloth wheel, not a hard attachment.

Also, the knives I've seen in pictures have the brass looking bright. Should I not clean the brass? How about the leather on the hafts? They are dusty looking compared to pictures in here and elsewhere, especially the shorter blade model. Again the pics I've seen of other knives show the handles to be darker and cleaner looking than these two. Do I leave them alone? How about the one intact sheath? Ronnie said it could be "cleaned up a bit." What does that entail? Should I not touch it?