cleaning Steinway hammer rail

[Steven Sandstrom]

  I'm replacing hammers, shanks, and flanges on a 1920's Steinway grand. The hammer flange bushings have a nice green color to them. When I took off the old cloth on the hammer rail, the rail is a nice bright green. Is there a good way to clean this off? What would work the best to clean it? I don't want any of this to get into the new parts. Any help would be great.

Thanks, Steve Sandstrom
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