My pitiful attempts with that tool just made a mess. I think if I had the skill to make those corrections, I would have the skill to not make a mess in the first place. I caved and did it all in Sculpt and rebaked it.
If 100% Smoothing is on, how can you smooth strokes that are too sharp? The Color Operations tool only works with color except the colors in the normals page of the texture editor. Nothing in Tweak works.