Larry,
The way I did it was to take the cable out of the sheath. I soaked the cable in brake cleaner in a clean pan. I then brushed it with a toothbrush sized brush to get all of the grease out of the cable. Then I sprayed brake cleaner in the cable sheath multiple times until the "grease" color did not come out anymore. Then I dried the cable sheath with low air pressure out of the compressor. After the cable and sheath were dry of brake cleaner and grease, I started reinstalling the cable in the sheath; and as I did that I continually dumped extra fine graphite in the area of the beginning of the sheath -- I tried to "drag" as much extra fine graphite as the cable would take. Do this very slow if you want to try it; and also make sure that you put paper or towels down that you want to throw away -- it makes a heck of a mess.
Again, I did this on my 1971 Hemi Cuda this past summer; and it really worked like a charm. The only caveat is that your sheath and cable needs to be in really good condition -- because if there is slop or is worn bad, nothing will get the slack out of it save a new cable anyway.
Mark
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