This is probably a noob question, I don't even know what to search for here.
When smoothing weights with the brush, it always favors lightening the darks. Is there a way I can get a more ...averaged(?) smoothing that also darkens the lighter values? In this case I'm painting out portions of a blend shape I don't want, but need a smooth transition at the borders.
Right now the only way I can see is to back up and build up or down alternating between add/scale mode, smooth it out, unfuck the shapes and repeat.
tldr; smoothing is additive and i'm unhappy.